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low power laser light sourceWhat are the characteristics of? Let's make a brief analysis together.

Low-power laser light sources have the following characteristics:

1. Good monochromativity. The color of the laser is very pure, and its monochromatics are more than 1010 times higher than that of ordinary light sources. Therefore, the laser light source is an excellent coherent light source and can be widely used for optical communication.

2. Strong directionality. The divergence solid angle of the laser beam is very small, on the order of milliradians, which is 2 to 3 orders of magnitude smaller than the divergence angle of ordinary light or microwave.

3. High brightness. The radiation brightness at the laser focus is 108 to 1010 times higher than that of ordinary light.

low power laser light sourceThe main advantages are high brightness, good color, low energy consumption, long life and small size. At the same time, it is necessary to have five dominant light sources. Only through lasers, LED light sources are also very powerful, but it is difficult to achieve breakthroughs in brightness. Therefore, enterprises will not be able to be in such a social level in the future competition with laser light sources. Of course, these advantages have not yet been fully demonstrated. The cost of laser light sources is also very high, especially when realizing color displays, the problems of green brightness, vitality, and red-blue mismatch also plague the industry.

A low-power laser source is a coherent light source that emits light using excited particles under the action of stimulated radiation. Low-power laser sources can be divided into four categories according to their working substances (also known as active substances): gas laser sources (including atoms, ions, molecules and excimer), solid laser sources (crystals and neodymium glass), liquid laser sources (including organic dyes, inorganic liquids and chelates) and semiconductor laser sources.

Low-power laser light source has obvious advantages in color. Some friends may say that LED light source can also emit pure three-color light. Yes, here I will say the second development advantage of China's laser, that is a brightness. Due to the bottleneck of technological development, the brightness of the bulb can reach tens of thousands of lumens, and the brightness of the laser can reach 70000 lumens. Whether it is a traditional bulb or an LED light source, you can only see and sigh.

One more thing to note, if the brightness of traditional bulbs will be increased, then this will have a great impact on the life of the bulb. For example, if a projector lamp can be used for 6500 hours in normal mode, the service life will be drastically reduced to 5000 hours in high-brightness mode. Here is the third advantage of laser: life. Low-power laser light sources have a long service life, reaching tens of thousands of hours in a few hours, which is very attractive to users.

low power laser light sourceIt is composed of working substance, pump excitation source and resonant cavity. The particles (molecules, atoms or ions) in the material are excited to the excited state of the high energy level under the action of the pump excitation source, resulting in the number of particles in the excited state of the high energy level more than the number of particles in the excited state of the low energy level electrons, that is, the formation of a particle number inversion. When a particle jumps from a high energy level to a low energy level, a photon is produced. If the photon returns to the working substance under the action of the resonant cavity mirror and induces the transition of the same nature, the radiation with the same frequency, direction and phase will be produced. So rely on the feedback of the resonant cavity to amplify the cycle of use, back and forth oscillation, radiation capacity is continuously improved, that is, the formation of a strong laser beam output.