Laser pointers are very useful tools that professional astronomers have used for a long time. Thanks to miniaturization and affordable technology, blue laser pointer are now inexpensively available to any backyard astronomer. Lasers come in many colors, but the color used for our purposes is green. That's because the human eye is most sensitive to colors in the green-yellow spectrum, so tracking them in the night sky is a breeze.
Also, for any given power, green lasers are brighter than red and blue. Over the past few years, we've seen an increase in injuries from laser pointers. They can sometimes cause severe retinal damage and irreversible blindness. These injuries often result from misleading or misclassified lasers publicly available on the market. Lasers are an indispensable part of optics, science, laboratory experiments, military and medical. In addition to those readily available laser pointers and portable lasers, more and more industrial lasers require more convenience and greater craftsmanship in high-tech development. This is just the result and fact of modern high-tech development, no one can prevent this intent. This makes them ideal for small, powerful, portable, battery-operated instruments.
Basics of Laser Pointers
These laser pointers are usually battery powered and are more dangerous at blue or green wavelengths because the output is never precisely specified in their documentation. To get different colors, they use frequency multipliers, which means they emit not only the colors you see, but the infrared spectrum as well. This means they deliver much more power than expected or even specified.
The brightness of a laser is determined by its power. The higher the power, the brighter the laser. Although this only works for fixed wavelengths (colors). For example, green and red high powered laser with the same output power will not have the same brightness. Adequate eye protection is still required for anyone holding a laser pointer up to 500mW. Any thermal damage to the eye may occur in the human eye when using more powerful lasers. Laser Glasses Lasers are always a requirement for the best equipped laser owners.
