High-stability air-cooled green laser

Abstract

The invention discloses a high-stability air-cooled green laser which comprises a pumping source, a collimating lens group, a rear cavity mirror, a laser crystal, a Q-switched crystal, a polaroid, a frequency doubling crystal, a 0-degree two-point reflector, a 45-degree spectroscope, a window mirror and a beam expanding lens group. Pump light emitted by the pumping source is reflected after passing through the collimation photoscope group, the rear cavity mirror, the laser crystal, the Q-switched crystal, the polaroid, the frequency doubling crystal and the 0-degree double-point reflector, passes through the frequency doubling crystal again, is reflected to the 45-degree spectroscope on the surface of the polaroid, passes through the window mirror and is finally emitted out through the beam expanding photoscope group. Cooling fins are embedded in the surface of the laser shell and are of a fin structure, a fan is installed outside the shell, and the cooling fins dissipate heat in an air cooling mode. The device is simple and compact in structure, convenient to carry, capable of achieving industrial batch production, good in output light beam quality, narrow in pulse width, adjustable in repetition frequency and the like, and can be widely applied to the fields of laser radar, medical treatment, scientific research and the like.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a high-stability air-cooled green laser. Background technique [0002] Laser is one of the major inventions of modern science and technology. When the laser is working, the energy of the pump light absorbed by the laser crystal will generate a large amount of heat, and the large amount of heat will cause uneven energy distribution inside the crystal. If the heat accumulated for a long time cannot be released smoothly, the laser cavity will be thermally deformed, which will lead to the misalignment of the components in the laser and affect the stability of various indicators of the laser. [0003] At present, the green lasers used in the industry generally use water cooling for heat dissipation and cooling. The water cooler is used to cool the water and send it to the laser to exchange heat with the heat sink to achieve the purpose of reducing the temperature of the laser. The tr...

AI Technical Summary

Problems solved by technology

Its internal structure is very complicated, including compressors, condensers, evaporators and expansion valves. These internal structure devices will cause the overall structure of the laser to become very large, and the uneven water cooling will lead to the stability of the output power of the laser. Not high and takes up a lot of space

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