What can choosing a green laser pointer do for you?

Once it is understood that the color of light is a direct observation of its wavelength or frequency, the goal in the green direction can only be to reduce the wavelength of red light. This is done in the laser pointer through the second laser process, that is, by using the red laser as the energy source for the second laser, this time in the infrared range. The optical effect in the specially selected crystal ensures that the wavelength is halved as needed, and we can see green light. The trick of "turning red to green" allows the green laser in your pocket to achieve a global breakthrough at the beginning of the new millennium. The advantages of using it as a pointing device are obvious, but it can also be seen in areas such as telemetry that the increased range and visibility can be used. With the help of a powerful green laser pointer, amateur astronomers can even point out individual stars to their companions.