A very high-powered Infrared laser diode working at 808 nm pumps a tiny block of Nd: YVO4 that generates light at 1,064 nm. This feeds a potassium titanyl phosphate intracavity frequency doubler crystal that produces green light of a visible 532 nm wavelength. High-powered green lasers use lithium triborate instead of KTP.
Features:-
An infrared filter, which is behind the mirror completely, removes the radiation of infrared spectrum from the output beam. In order to reduce cooling problems and prolong battery life, some green lasers operate in pulse or quasi-continuous-wave (QCW) mode. The Class III a laser product gives an output power of 5mw. This is the one of highest-powered street legal laser. Some green lasers even have an output of 10 mw, which has a range of 20,000 feet in darkness. Some even have a 3-second delay feature as these are high-powered lasers and can blind a person. Some laser point extenders are also available. They work by using lenses to minimize the beam spread of a laser. Its price starts from 55$. Majority of them have a life of around 3000 hours.
Applications:-
Green lasers can be used for a variety of roles. They can be used as pointing devices. The ability to form a continuous line in the dark is an added advantage; this has lead to its usage as rescue lights as it can be seen from miles away. It as been used for laser light shows. It is also used for sky gazing as a person can pinpoint a star by using the green laser. It can also be as laser pointers for guns, rifles. In the movie Alien vs. Predator it was used as a pointing device on some G36k carbines.
Advantages:-
The green laser has many advantages. It is fifty times brighter than a red laser because of which it can be seen from miles away, this helps in being rescued if a person is lost. It can also be used in high-tech weapons for aiming purposes. Because of its high range, Green laser pointers can be equipped in different kinds of weapons. High and low temperatures do not affect the performance of Green laser pointers so in case a person is lost in a desert, he can still use Green laser pointers to call for help, in other case, even if a person is lost some where in mountains all covered with ice, he can still use it.
Disadvantages:-
Due to its high power it can permanently damage a person's eye. As it can form a continuous line of light that might reveal a person's position so it cannot be used in stealthy operations or by SWAT.
Green laser is quite awesome but it should be used carefully.
Green Laser Pointer Astronomy
A laser pointer is a type of laser in a movable, pen-shaped form that is normally of design to be held by hand. Laser pointers are most generally used to display a point of light that could show things of curiosity, for example during a presentation. On the last few years laser pointers received attention in the public press and roused some public curiosity. As a consumer product, laser pointers are decided to be harmless when its used for their designed end use. Sadly, however, the laser pointer can easily be used incorrectly.
Green laser pointers, (also called DPSSFD, diode pumped solid state frequency-doubled), are much more proper complicated than the standard red ones, since laser diodes are not familiarly handy in this wavelength range. The green light is created in an non direct process, beginning with a high-power (commonly 200-300 mW) infrared AlGaAs laser diode performing at 808 nm. Like all lasers, laser pointers should never be projected directly in the the eyes of a person or animal or indeed any moving vehicle in which the driver or pilot could be distracted. The output of laser pointers is generally limited to 1mW or 5mW in order to aid collateral damage to the retina of human eyes
The technical knowledge of the green laser pointer is totally different from a red pointer. Because it is so much brighter than the red lasers, a green pointer could be seen at a much farther distance. This of course is good if you are still trying to signal someone away. Experts say that a direct shot to the eye from a laser by 15 mW could incessantly damage the eye within a fraction of a second. The risk becomes more big with more proper powerful lasers, which are readily that you can use on the internet at this day. Get on the 21st century with your laser pointer. Get a green laser pointer, on the other hand do remmeber the risks of using it. The utilize of assurance goggles when working high-powered lasers is much suggested.
If you want to find and compare some of these laser pointers I recommend that you do a search on google or go to amazon and compare prices, they are very useful for teachers and for people that make presentations.
Both Luigi Castagna & John Zeta are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
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