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Green Lasers Are Better Than Red Lasers

Aug 22, 2008
If you're a techie, chances are you remember playing around with one of those red-beam laser pointers when they first came out. There are certainly a lot of ways to use it. At school or work you can use them when presenting PowerPoint slides. For fun, you've probably confused your pet with them and pointed them at friends' foreheads.

But, let's face it, red laser pointers are just so old school now. Everyone has one. Your grandmother has one, and she doesn't even use PowerPoint. You need a new toy to make you the top geek at work and create new fun with your friends, furry and not.

Any techie knows that the red beams use 650 nm wavelengths. Powerful new laser pointers on the much improved 532 nm wavelength are now available on the market. And do you know what the more intense frequency creates? It creates a green beam.

So if you got your kicks by using your old red laser beam to highlight things on a projection screen across the room, imagine how good you'll feel using a green laser pointer to highlight things that used to be out of reach. Because a green laser beam is more powerful than a red one, it can highlight clouds, low-flying aircraft, and even star constellations. Best of all, you can see the green laser beam outside during full sunlight.

In fact, if you use this laser outside and do happen to point it at an airplane, it's so powerful you could get yourself put in jail. Yes, pointing a sighting device at a plane could get the feds coming to your house to investigate whether you are planning to point something more than a laser at planes. What little red pointer can get you in that much trouble?

Furthermore, the green laser pointer doesn't produce a tiny little spot. Oh no, it turns out that your green laser lets you see the whole beam as it travels to the stars. Think Luke Skywalker kinds of power! Are you beginning to see the possibilities here?

A green laser pointer is at a whole separate plane from the old-style red laser pointer. For a true green, a pointer needs a green direct injection laser diode. These diodes could be potentially dangerous if handled by the public at large, so they're not even available wholesale. So this complicated process follows to keep hazardous material out of peoples' hands. (And only the geeks in the room will understand a word of it.)

The green laser pointers, available on the market today, all use Diode Pumped Solid State Frequency Doubled technology, aka DPSSFD, which is good news for everyone. Basically, this means that an infrared laser diode pumps out 808 nm, which is then altered to 1,064 nm, which is then shot into a crystal that doubles the frequency to produce the green beam at 532 nm. (It should go without saying, because only card-carrying geeks are reading this, which with frequency smaller numbers mean stronger.)

So it is no wonder that green laser pointers are a must-have for the geek elite. While the green laser has been around a while, it's not so easy to find outside of technical settings (again, remember they can target airplanes). They're also not cheap. While you can pick up a red pointer for less than $10, a green one will set you back $50 or so, not out of reach, just not something you might purchase casually (or more to the point, something your grandmother won't purchase on the spur of the moment). Go on, you know you want one. Yeah, you know you really need one. What's stopping you?
About the Author
Do you need a beautiful green 150mw laser pointer gadget? If so, you should consider picking up the 150mw laser pointer gadget by checking out our review.
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