What is the development principle of the laser pointer?
The structure of the red laser pointer is the simplest. The reason why it is simple is that the red laser pointer is basically just a diode with battery as the energy source. And there are laser diodes that generate this wavelength. The red laser pointer first appeared in the 1980s. It is a large and heavy device worth hundreds of dollars; it is very small and very cheap. The word laser should be familiar to you. Laser production We often encounter lasers in our daily lives, such as laser 20000mw pointers used in classrooms, and CD-ROMs used to read CD data. In industry, lasers are often used for cutting and micromachining, displacement measurement, etc. In the military, lasers are also used to intercept missiles. Scientists also used lasers to accurately measure the distance between the earth and the moon, and the error involved was only a few centimeters. These are some of the broad applications of lasers. In fact, it took a long time to develop a laser. The famous phy...