What is the principle of laser communication?

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The advantage of laser communication is, first of all, its large capacity. What is its capacity?

The advantage of laser communication is, first of all, its large capacity. What is its capacity? When we usually call, the words we talk about are sometimes irrelevant. This type of battle is due to the fact that a pair of telephone lines can only pass through one way. If another line arrives, the two normal parties will be interrupted. If 10 pairs of people use a pair of phone lines at the same time, it means that 20 people can talk at the same time, then they can't talk at all. In order to solve this problem, it is necessary to adopt the carrier method and other methods, so that each mobile phone is in each frequency band. Since the frequency range of an ordinary phone is 300-400Hz, and the highest frequency of a pair of phone lines is only 1500kHz, a pair of phone lines can only transmit more than a dozen phones at the same time.

A yellow 3w laser pointer with a wavelength of 593.5nm appeared on the market. Based on DPSS technology, two laser beams with wavelengths of 1064nm and 1342nm are added through a nonlinear crystal. The complexity of this process makes the yellow laser pointer unstable and low efficiency. The output power varies with temperature in the range of 1-10mW. If it is overheated or overcooled, there will be a mode jump. This is because the size of the laser pointer does not provide the required temperature stabilization and cooling components.

The green Burning Laser Pointers is very powerful, so don't look directly at it! After using it for a while, I think I need to prepare a few for my friends and one for myself. The feel and quality of the laser left a deep impression on me. Its metal body is pleasantly durable. The weather is beautiful and strong, but small enough for children or people with weak hands. It can be used for military, automobile and work. The rest of the laser pointer is still working, so I know it is not a battery. I hope it makes sense to buy a new one, but in an emergency, I want to believe that my laser pointer will work! I have used it at home to help install ceiling fans. You will be happy to put this in my army room. I visited some of them with the idea of ​​giving gifts to my family.

When buying a green Laser Pointer, I think reliability is more important than quality and score. My search for a durable, powerful and reliable laser pointer at a reasonable price is over. However, I solved the problem again. This product provides everything you expect from a portable laser pointer. It has a wrist strap for added safety. This is a big and heavy waterproof thought. The first mode I assume is to focus the beam on a given area.

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