Portable Handheld Lasers - The Laser Pointer Buying Experience That Burned Us All

Hand held lasers are by far the most practical form of technology, and for good reason. The small size makes the lasers very convenient and portable in size, so taking the pointers into the field to conduct research has been gaining popularity amongst many astronomers as well as medical and military professionals. But not all portable handheld units are worth buying, often times, the products have been manufactured rather cheap and can burn out far faster than a high quality device should. There have been stories of expensive laboratories experiencing major problems with the cheap laser pointers they had acquired, if you want to ensure that the hand held unit you buy is worth using, there are a few key pointers to keep in mind.

First, what exactly are you looking to accomplish with your portable handheld laser pointer? Does the beam need to output over any set distance? What color frequency are you looking for and how much output power does your application require? These are all simple questions that you may want to answer before you start looking to shop for a portable pointer. Lasers are high-tech gadgets that can come with a hefty price tag, be sure that you are ready to do a little bit of research into any hand held module before you order one from a retailer. All portable lasers are not created equal! A little bit of knowledge about any particular handheld unit can not hurt your situation, in fact the more you know about the diode, casing, expected life time, etc., the better off we will be when we are looking to buy lasers.

There is a lot we can do to ensure that our purchasing experience does not leave us shocked or embarrassed in any way. You may have heard horror stories about hobbyists who would turn to eBay to buy their laser pointers, looking to save a few dollars here and there. The problem with this was that the units being sold on eBay turned out to be the lowest quality laser diodes available anywhere. There have been reports of people receiving completely broken pointers, or even worse, not receiving anything at all. When you look to save a few pennies, be sure that you are not buying something from a teenager in their basement with an eBay seller account, you will get burned! Your best bet whenever looking for any variety of handheld portables, or even industrial laser modules for that matter, is to work with a reputable retailer who specializes in the specific type that you are looking for.

More often than not, you will find that the cheapest laser pointer available is not going to be the best deal. These consistently burn out far quicker than the company had advertised, and usually a little rain or a drop of water will ruin the product for eternity. This is why its so important to know where your purchase is coming from, do a little research on the provider you are looking to work with. Are they visible anywhere on the search engines, like Google? How does their pricing compare to that of competing laser companies? Do they provide any support, in other words, can you get questions that you have answered?

High power portable lasers are investments, be sure that you are securing your investment with laser warranties and a high quality laser retailer with search engine recognition and various methods of customer service. Do not be afraid to ask the laser company a question or two, if you are going to buy lasers from them, be sure you are dealing with individuals who know what they are talking about. A few simple precautions along with a few Google searches can teach us a lot about any laser model or particular company. If you are serious about buying portable hand held lasers, do yourself a favor and look into the laser source as well as the model that intrigues your interest. A good laser should last for a life time of enjoyment.

James has been working with both high power portable lasers as well as lower power handheld laser pointers. He has tested hundreds of laser varieties and worked with various laser manufacturers and retailers. His preferred laser resource is Big Lasers who specialize in providing professional grade portable handheld lasers

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Buy Green Laser Pointers - A Laser Pointer Price Guide For Buying Green Beam Success

If you are looking to buy green laser pointers you are going to want to do some research to ensure that the laser pointer you are purchasing produces a solid 532nm green laser beam. The reason that research will be vital here is because there are just too many green laser pointer distributors out there on the web, and the fact is that not all of them ar 100% trustworthy.

So listen closely as we cover some major points that will help you achieve green beam success when you are trying to buy green laser pointers at a reasonable price. First and foremost, you need to determine what exactly are you looking for. In other words, what sort of laser applications are you going to be performing? Does the green beam need to be powerful in output power? Do we need a constant on/off laser engagement switch or is a temporary push button sufficient? Are we considering distance, and if so how far will the green beam need to be visible for? So before we even start doing research on where to shop, we need to really sit down and determine what is our laser going to be used for in the first place.

When you have a clear idea of what your laser tool will be used for, then we can begin to crawl the web looking for the finest quality diodes that we can purchase at a reasonable price. There is, however, something that any hobbyist or professional must keep in mind: Buying cheap is not necessarily going to mean you have gotten the best laser deal. More often that not, the cheaper, lower cost laser pointers are manufactured with poor quality green laser crystals and housed in less than adequate laser casings. This can save you a few bucks, but what is the point of a few pennies saved when your laser burns out within the first two weeks and you find yourself searching the web yet again looking to buy a new unit. So if you are going to spend a little money on the device, do yourself a favor and do it correctly.

When you see a module that you like and which falls within your budget, then you can really start to consider placing your order. Be sure that the retailer you are working with has reasonably priced lasers. The market for buying pointers is relatively competitive, a lot of companies are offering the same goods, so a little bit of market research can tell you very quickly which laser company is providing the best deal. No sense in buying the same 95mw green laser pointer at $300 when you can get it for $200, right?

When you have found a reliable source, be sure to take a look at the laser safety equipment they are offering as well. Lasers, though electric and brilliant in their performance, can be very dangerous if used incorrectly. You must always keep the safety of others and yourself a number one priority so that the beam does not cause any bodily harm to people that are present. Take your experiments seriously, and your casual use as well. It does not take too much dense light to damage a persons retinas, so be careful where you point your laser.

Finally, be sure that the green laser pointer you are going to buy has some type of warranty attached to it. Sometimes a laser will burn out prematurely, but this is ok if you are working with a top notch laser company. They will gladly replace the green laser for you, free of charge, if you have found the right retailer. So do your research, and buy green laser pointers with a good knowledge about what is out there so that you can make the best educated consumer decision and get the brightest green bang for your buck.

James has been buying green laser pointers since they were first made available to the public. He has designed various green laser accessories and written extensively in the laser light technology field. His preferred laser provider is certified BigLasers.com, where he personally chooses to buy green laser pointers.

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Buying Green Laser Pointers 532nm Tech Tips and Reviews

There is a huge variety of laser pointers available online today that anyone can buy with real ease. But the fact that there are literally thousands upon thousands of green laser models to choose from can make it rather difficult to determine which is the best value for your pointers sale.

Here are a few tech tips and review points to keep in mind whenever you are considering buying a green laser pointer.

1. How much output power are you looking for in your green laser?

The typical low power pointer produces a green light frequency at 532nm through 5mW and is the most commonly used laser light tool. However, recent development in laser diode technology and stability have allowed for the creation of highly powerful lasers from 15mW through 500mW, all in hand held form. There are even green lasers that can burn plastic, light matches, pop balloons, and be seen visibly for more than 50 miles. So, knowing how much output power your particular application requires can be vital to determining which green laser you should buy.

2. What conditions will you be using the laser pointer under?

For example, will there be weather to worry about, or do you plan on buying a green laser for astronomy purposes through a clear night sky? Whatever your application may be, there may be some need for safety measures to be incorporated into the laser devices themselves. Such as basic water proofing, or a collimating lense cap that allows you to pinpoint the beam to become wider or thinner. Also, if shock protection is needed for high speed or mobile laser use, then other model specifications will need to be taken into account like improved solid casings and internal diode shock protection.

3. What is the price range you are willing to spend to buy your green laser pointer?

This can make a huge difference in what type of laser you purchase and the quality of the diode that you are considering to buy. Because a laser may have an incredibly low price, of $20 or less, does not mean that the device is a high quality laser instrument. In fact, with high precision tools such as lasers the lower the price more often the poorer the quality. A good price range for a 5mW is between $49.99 and $74.99, while other more powerful lasers can range from $100-$1000 or more. Doing a little bit of research into the quality of any laser and how that relates to the price can save you a load of cash and headaches from a poor quality sale.

4. How often will you use the laser and what type of life time are you expecting?

Because different lasers produce different output powers and use different power sources, not to mention the differences in green diode quality, there can be some huge differences in the expected lifetime of certain laser pointers. A typical cheap laser pointer will burn out in less than 100-500 hours of use, while, a high quality pointer will have a life expectancy of 5000+ hours as a standard, usually with a standard 3-6 month warranty.

Clearly the differences in laser pointer quality and the companies that provide them requires anyone considering buying a green laser pointer to do a little bit of research into what they are really looking to get a good deal on. As with other high tech luxury items, especially ones used for tactical military, scientific, and even medical uses can really require some better specifications than your typical cheap laser key chain bound to break in hours.

So be sure to look into a few reputable reviews of laser pointer models or find a genuinely reputable company that offers not only a wide variety of lasers, but at a reasonable cost with the highest quality design standards in mind. This may take a bit of looking, a few simple Google searches can usually get the job done, be sure to note price, mW (output power), and lifetime + warranty whenever planning to buy green lasers.

Don't let the appeal of a low price or good looking picture get the best of you, quality cannot be replaced by good looks. You want a laser pointer that produces spectacularly visual green laser beam with great stability and quality collimation, the less refraction and the clearer the beam the better the quality of the laser you want to buy. Checking some videos or testimonials can make all the difference between an educated purchase and sale thrown out to the wind.

James is an avid green laser enthusiast and has been using green laser pointers for personal and professional applications for more than 10 years. His preferred source to buy green lasers is reputable Biglasers.com with the world's largest high quality laser and laser pointer selection.

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Zero in on Your Laser Specifications before Buying

It will save a lot of time and effort if you determine the type of laser you need for your application before shopping around. This article will lead you through the "mysteries" of lasers to your final selection. We will not go through the technical theories of how a laser works, but what lasers are used for what applications. We will determine the proper choices for Marking, Engraving, Cutting, Welding, and Scribing.

There are many types of lasers, each having different characteristics and differing interactions with various materials. We need to know the lasers output wavelength, average power, peak power, pulse rate, beam quality, and beam size. It will also help us to understand the conversion efficiency and consumable requirements of a particular laser to evaluate the operating cost.

The following are the various types of lasers we will be considering for the applications I mentioned above:

The CO2 Laser, with a wavelength of 10,600 nm (nanometers), reacts best with organic materials, wood, plastic, paper, glass and fabrics but can be used for metal applications at the higher power levels. With output power levels from 10-Watts to 25-Kilowatts, these lasers can be used for marking, engraving, cutting, welding and scribing. Metals are very reflective to the wavelength of CO2 Lasers and they do not work well for marking metals due to the lower power levels required for marking. CO2 Lasers can operate in the continuous wave (CW) mode or a pulsed mode. However, the peak power in the pulse mode generally never exceeds twice the CW power.

The latest CO2 lasers, 10-watts to 500-watts are generally RF excited diffusion cooled and sealed units. 10-100-watt CO2 lasers are air cooled and water cooled at power levels above 100-watts. With the water cooling requirement, a refrigerated water chiller is generally necessary. A CO2 laser is approximately 10% efficient, so 90% of the input power is dissipated in heat that needs to be removed from the laser by either air or water cooling, thus further decreasing the wall plug efficiency. At power levels over 500-watts, CO2 lasers need to be provided with a laser make-up gas (the lasing medium) to maintain the output power level of the laser. This make-up gas is a consumable and adds to the operating cost. The sealed lower power CO2 lasers generally can last 3 to 5 years before needing to be recharged with gas.

The "Q" Switched Nd:YAG or Vanadate Laser with a wavelength of 1,060 nm is best used for marking and scribing applications. These lasers react well with metals, ceramics, and plastics for marking applications. The average output power levels of these lasers generally range from 5-watts to 100-watts, and the newer units are diode pumped (excited) rather than flash lamp pumped. The unique feature of this Nd:YAG laser is the "Q" Switch which turns the laser beam on and off at frequencies from 1 kHz to 50 kHz.

On the off cycle, the diodes continue to pump energy into the laser crystal so that when the beam is turned on again it releases a very high peak power pulse in the multi-kilowatt range. This high peak power pulse quickly breaks down the surface of the material being marked and virtually vaporizes it. These higher power pulses also help in producing a contrasting color when marking plastics.

The Diode Pumped Nd:YAG lasers are generally water cooled via small refrigerated chillers to maintain laser output power stability and cool the diodes and laser rod. The solid state Nd:YAG or Vanadate laser rod (crystal) is the lasing medium and will last indefinitely if cared for properly. The laser pumping diodes will generally last from 10,000 to 20,000 hours before replacement is required. The most frequent maintenance required is a change of water, water filter, and anti-algae compound in the closed loop refrigerated chiller's water circuit every 3 months. Laser optics will also have to be cleaned periodically.

The "Q" Switched Nd:YAG and Vanadate lasers can also be frequency doubled to 532 nm (green), frequency tripled to 355 nm (ultraviolet), and frequency quadrupled to 266 nm (deep ultraviolet). The shorter the wavelength the smaller the spot size that the laser beam can be focused to. However, for each conversion to a shorter wavelength, the laser power is significantly decreased and the laser price tag is significantly increased. These shorter wavelengths are generally needed when processing micro-electronic devices that require the finest detail or resolution that can be achieved.

The Pulsed Nd:YAG Laser with a wavelength of 1,060 nm is suited to intricate metal welding, cutting, and drilling applications. The average power level of these lasers range from 15-watts to 600-watts and are flash lamp pumped. The pulse rates are generally 1 to 25 pulses per second for lasers with power levels up to 50-watts and 1 to 1000 pulses per second for the highest power lasers. The main feature of the Pulsed Nd:YAG laser is its high energy per pulse which can be up to 80 joules for the highest power laser. This laser functions by using overlapping precisely controlled laser pulses to control the progression of the cut or weld, and in the case of drilling several pulses can be delivered in the same location. For cutting and drilling applications, a high pressure small orifice coaxial gas assist nozzle is used to help remove the molten material from the cut path or drill hole. In the case of welding, a larger orifice lower pressure coaxial nozzle is used to deliver a blanket of inert gas cover to the molten weld area to prevent oxidation.

Because the Pulsed Nd:YAG laser uses a broad spectrum flash lamp for laser pumping (excitation), it is fairly inefficient at converting the electrical input power to laser power. It has an efficiency of approximately 3%. These lasers are water cooled at the low end via air/water heat exchangers and at the higher power levels by refrigerated chillers. The flash lamps require changing every 500 to 1000 hours of operation. Higher maintenance costs are associated with changing flash lamps, aligning and cleaning optics, and maintaining the water purity in the closed loop chiller systems. All of this said, it is still the only laser that can be used for certain applications.

The Fiber Laser, with a wavelength of 1,060 nm, is the newest laser on the block. It is diode pumped and has power output levels from 5-watts to 10 plus kilowatts. From 5 to 20-watts, it can be "Q" switched for marking and scribing applications including plastics. At the higher power CW mode of operation, it can be used very effectively for metal cutting and welding applications. The beam quality of the Fiber laser is generally better than other 1,060 nm lasers so it will process parts faster for any given power level. The laser beam is delivered to the work piece via small diameter fiber cable with a focusing head so it is very flexible when trying to fit it into tight quarters or moving the laser beam at high speeds on an X-Y-Z Axis Gantry System. One laser can also share its laser beam with several workstations by switching the beam from one fiber optic cable to another.

The Fiber laser has a wall plug efficiency of nearly 30%. This means it will take the least amount of electrical power to operate for any given power level. Pump diode lifetimes in excess of 100,000 hours are projected. This is truly a maintenance free laser. Fiber lasers from 5-watts to 100-watts are air cooled and over 100-watts are water cooled. Because of the higher efficiency of the fiber laser, the refrigerated chiller size can be smaller than other types of lasers operating at similar power levels.

Cutting, Welding and Marking capabilities of the several laser types mentioned above:

1. Low power CO2 lasers are used for marking and engraving wood, plastic, paper, fabric, and other organic materials. These lasers can also cut paper and wood up to 1/8" thick.

2. High power CO2 lasers are used to cut wood up to 2" thick and steel up to 5/8" thick. They can also weld steel up to 1/2" thick.

3. "Q" switched Nd:YAG and Vanadate lasers are used for marking and scribing metals, plastics, ceramics and other dense materials.

4. Pulsed Nd:YAG lasers are used for intricate cutting and welding applications and also used for hermetically sealing small electronic device enclosures and medical implant devices. They can also be used for the intricate cutting of blood vessel stents. Other higher power applications include the drilling of cooling holes in high temperature turbine engine blades and vanes.

5. Low power "Q" Switched Fiber lasers are used for marking metals and plastics. They can also be used to scribe solar cells and ceramic materials.

6. High power Fiber lasers are used to cut and weld metals. They can cut metals up to 1" thick and weld metals up to 5/8" thick.

There are many other applications that these lasers can be used for other than the ones listed above. You should now be prepared to approach either a laser manufacturer or laser systems manufacturer that produces the laser type you feel would be required for your application. Most all manufacturers will process evaluation samples at no charge to verify the results you are looking for. Other information that they will need is your desired production rate, your part handling preferences, and automation required.

Robert Holland is the Technical Advisor for allthelasers .com. Allthelasers.com is a depository for information and links to help users find the appropriate laser systems and component vendors to fill their laser requirements. Mr. Holland has held various laser related management, engineering, and sales positions for laser and laser systems manufacturers since entering the industry in 1972. He has a thorough knowledge of industrial high production laser systems and their applications.

Visit Laser Marking [http://www.allthelasers.com] or call (386) 232-4186

© 2006 by allthelasers.com. Free for unlimited distribution as long as this copyright notice and link to web site are in place.

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Benefits of Buying Affordable SEO Services From Internet Marketing Experts

SEO or Search Engine Optimisation is used by website owners to improve their Google search ranking & associated traffic. A team of SEO experts is required to do a complete SEO job for a website. There are multiple affordable SEO internet marketing companies available to deliver SEO Packages. To buy SEO services online is more economical rather than hiring a SEO in-house team to do the same job. An online SEO company needs to evaluate your website if you are looking for custom made solutions. But for most of the small and medium sized websites, a pre packaged SEO service should be sufficient. You may buy SEO online, also when you need to execute only a few SEO elements for your website.

There are multiple elements when it comes to complete SEO. It starts with on-page optimization and includes a variety of submission services. A new website or a website which is doing SEO for first time, requires a complete re-haul of its website to include keyword suggestions from on-page optimization team. Again SEO experts would do a very good keywords analysis to come up with right kind of keywords for your SEO project. You should therefore buy services only from a qualified SEO internet marketing company. An affordable SEO solution would also do the sitemap submission for your website to various search engines.

This SEO service is quite affordable and you may buy only a part of submission services, as what suits your marketing budget. There are multiple offerings under this banner; including directory submissions, article submissions, social bookmarking etc. One may also look for affordable SEO services, which provides RSS Feed submissions & Press Release submissions too. When you buy service, you should confirm if the online SEO Company provides content writing services too. Most of the time, a website may not have relevant articles, press releases etc, stuffed with the suggested keywords. These articles are required during submission service.

If budget permits, one should look for SEO internet marketing company which provides Blog posting, Forum participation, Video submission & various other value added services. An affordable SEO service may provide all these services under a single banner. With a qualified SEO experts team at your disposal, your website search rank on google would improve drastically. Needless to say this would help improve traffic to your website resulting into better profits. Thus it's important to buy affordable SEO services from a well qualified online SEO company. It's a prerequisite to your online business success and profits.

Seomixi, an Search Engine Optimisation company can offer the best seo services that help your website to feature within the first few pages of search engines. Such Affordable seo services can enhance your revenues. We have many seo experts in our team. The seo packages offered are very affordable and the quality of work is excellent and professional.

For more information visit http://www.seomixi.com

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

What to Check and Inquire Before Buying Full-Service SEO Packages

Getting full-service SEO packages is no joke; with prices ranging from $150 to $1,500 per month, it's a significant investment to make for your website. The definition for 'full-service SEO package,' however, can vary as much as its price. Different SEO companies include different services and guarantees in their respective packages. There are, however, certain SEO techniques that no Internet marketing package should go without.

Pre-Analysis: Planning for the Campaign

Although you could just get any set of services at random, packages from real professional SEO companies usually include some pre-analysis. That group of services usually answers questions that are critical to your SEO project such as

o How popular is your site? How popular could your site be?

o Who are your primary competitors? Do they have an advantage with regard to SEO?

o Do you have marketing advantages that aren't being maximized?

o Are your goals realistic? What's necessary to achieve them? How long will that take?

It might seem like answering these questions would merely be a minor quibble, but it will set the path that your project will take. These services are very important if you're serious about achieving a certain goal with your site.

On-Site Analysis: Maximizing What's There

Now, it's possible that your site already has certain marketing content that you're just not maximizing. You should ask for these services because they could turn that existing content into big assets for your SEO project. This group of SEO services usually includes

o Creation of meta tags in your site's HTML code

o Editing of robot.txt files for best search engine results

o Creation of XML sitemaps for better crawling by search spiders

Because these services require a high level of expertise, not all service providers manage to provide them. The SEO package you eventually get, however, should include all these items to achieve maximum impact.

Off-Site Marketing: The Meat of the Matter

Central to all SEO packages are the off-site marketing techniques, which form the core of most Internet marketing projects. That's because these SEO strategies will address multiple areas of your marketing scheme. Off-site marketing often includes things like

o Writing a number of unique articles and then manually submitting them to top article sites

o Submission of your site's URL to various web directories, known as manual directory submissions

o Contextual link building with the use of niche blogs or hub pages

o SEO Copywriting for improved search engine crawling and conversion

o Making some guest posts at popular blogs of your niche. It'd brand your business and website while giving you quality backlinks.

o Advertising in related niche forums

o Link bait articles - These articles are written on hot concepts related to your niche and industry. They're usually picked up by various publishers and this helps you increase your link popularity.

You'll notice that the products in this group of services will interact not just with the search engines, but also directly with your market and site visitors. Aside from explicitly looking for these same services, you should also make sure to get them from a well-established, quality-conscious professional SEO company.

Updates and Support: The Invisible Factor

While this group can't exactly be called SEO services, they're just as important once your project begins. Regular updates and progress reports will help you gauge how well your project is going, if additional components are necessary or if certain things have already become superfluous. Some of the questions you should ask SEO companies are

o How often will they update you, and through what means?

o How and when can you ask for additional support once the project starts?

o Will the company give you reports, breakdowns and detailed analyses of your project progress?

These value-added services will make it easier for you to keep track of your project and keep your project on track. You should always ask about what each company offers in this category because only the really good companies can offer you thorough services in this respect.

When you canvass for a full-service SEO package for your site, look for all the services listed above. That way, you'll be getting the most out of your investment and making sure that you're really getting a full set of SEO services.

Sunita Biddu is an internet marketer and successfully running professional SEO and marketing company that offers powerful contextual link building service, unique article marketing service, and full-service SEO packages to help website owners achieve top search engine rankings. She is the CEO of copywriting company Content Axis, Inc. that provides premium quality copywriting services. While providing top rate and affordable SEO services, she also writes helpful guides on powerful yet ethical SEO strategies. To know more about the services, spare few minutes at SEO-Peace.com

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.