What is the development principle of the laser pointer? from Wallis Lucy's blog

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 physicist Einstein discovered its principle as early as 1917, but it was not until 1958 that the laser was successfully manufactured.

The emergence of laser cutting technology

Laser pointer 5000mw cutting processing is to use high-energy laser beam to irradiate the surface of the workpiece to partially melt and vaporize the irradiated area, so as to achieve the purpose of processing. Because the laser is called a very small spot after being focused by a special optical system, the energy density is high, because its processing is non-contact, there is no mechanical punching force on the workpiece itself, and the workpiece is easily deformed. It has very little thermal influence and high precision, and is widely used for cutting and dicing solar panels and thin metal sheets. Laser is the abbreviation for Light Amplification by Stimulated Emission of Radiation. The full name itself shows the main processes involved in laser production. Before studying these processes, we must first understand the structure of matter and the principles of light emission and absorption.