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Optical structure of debugging-free laser device

An optical structure and laser technology, applied in the laser field, can solve the problems of long assembly cycle, difficult adjustment and high maintenance cost, and achieve the effect of reducing maintenance cost, reducing adjustment difficulty and shortening assembly cycle.

Inactive Publication Date: 2010-08-25
BEIJING AERONAUTICAL MFG TECH RES INST
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Problems solved by technology

Chinese Utility Model Patent CN87216562U discloses a stable and collimated linearly polarized output laser, although its resonator has been anti-disturbance and achieved stable output, but it has the following disadvantages: it uses polarizing lenses, Q-switched crystals and optical wedge pairs, and the adjustment is more difficult. Large, can not be free of debugging, resulting in long assembly cycle, high maintenance costs; and after the misalignment has a great impact on system performance

Method used

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  • Optical structure of debugging-free laser device
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Examples

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Embodiment 1

[0010] Embodiment 1 is a Nd:YAG laser with an operating frequency of 5 Hz and an emission wavelength of 1.06 μm. The optical surface quality of the output / total reflection mirror is 15 / 5, the flatness is λ / 10, the reflectivity of the total reflection film is ≥99.5%, and the reflectivity of the output mirror is 10%; the laser rod is a 50mm×φ4mm Nd:YAG crystal; The model of the xenon lamp is XMZ450P; the machining error of the corner cube is 5″; the passive Q-switching element is Cr 4+ :YAG, with an initial transmittance of 50%, is commercially available.

Embodiment 2

[0012] Embodiment 2 is a neodymium glass laser with an operating frequency of 1 Hz and an emission wavelength of 1.06 μm. The optical surface quality of the output / full reflection mirror is 15 / 5, and the flatness is λ / 10, of which the reflection rate of the total reflection film is ≥99.5%, and the reflection rate of the output mirror is 50%; the laser rod is 70mm×φ6mm neodymium glass; the xenon lamp The model is XMZ670P; the machining error of the corner cube is 5″; the material of the passive Q-switching element is BDN, the initial transmittance is 55%, and it is available on the market.

Embodiment 3

[0014] Embodiment 3 is a Nd:YAG laser with an operating frequency of 10 Hz and an emission wavelength of 1.06 μm. The optical surface quality of the output / total reflection mirror is 15 / 5, the flatness is λ / 10, the reflectivity of the total reflection film is ≥99.5%, and the reflectivity of the output mirror is 5%; the laser rod is 60mm×φ5mm Nd, Ce:YAG Crystal; the model of the xenon lamp is XMZ560P; the processing error of the corner cube is 5″; the passive Q-switching element is LiF:F 2 - , with an initial transmittance of 30%, and is available in the market.

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Abstract

The invention discloses an optical structure of a debugging-free laser device, which belongs to the technical field of laser and relates to improvement on the optical structure of the laser device. The optical structure comprises an output / totally reflecting mirror [1], a pumping unit, a pyramid prism [4] and a modulation Q element. The optical structure is characterized in that the modulation Q element is a passive modulation Q element, and the initial transmittance of the passive modulation Q element is 30 to 60 percent. The passive modulation Q mode has simple installation and lower angle requirement compared with electro-optic crystal, does not need adjustment, reduces the adjustment difficulty, shortens the assembly period, and reduces the maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of lasers and relates to the improvement of the optical structure of lasers. Background technique [0002] Military lasers must adapt to various environments and require insensitivity to shock, vibration, and temperature changes. Existing laser technologies are difficult to meet military requirements. For military systems, the reliability of the system is more important than the best state in various harsh environments. Therefore, a lot of research has been done on misalignment-resistant and debug-free lasers in pursuit of improving the reliability of the lasers. Chinese utility model patent CN87216562U discloses a stable and collimated linearly polarized output laser designed by Fan Qikang and others of Zhejiang University. Composed of an electro-optic Q-switching crystal and an optical wedge pair. The output / full reflection mirror is a flat lens with two coatings. The upper half of the output / total refl...

Claims

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Application Information

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IPC IPC(8): H01S3/16H01S3/11
Inventor 刘传胜田立龙胡文华王艳辛
Owner BEIJING AERONAUTICAL MFG TECH RES INST
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