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Green laser based on calcium oxide borate salt crystal

A technology of oxycalcium borate and neodymium oxycalcium borate, which is applied in the field of green lasers and achieves the effects of simple operation, compact structure, high stability and reliability

Active Publication Date: 2013-01-02
青岛镭视光电科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The combination of two nonlinear processes, sum-frequency and cross-saturation, leads to the generation of "green light noise"

Method used

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  • Green laser based on calcium oxide borate salt crystal

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Embodiment Construction

[0017] see figure 1 , the present invention is a green laser based on oxycalcium borate crystal, including laser diode 1 (pump source), laser resonator (composed of incident mirror 2 and reflector 4 at both ends of frequency doubling crystal 3) and frequency doubling crystal 3. The frequency doubling crystal 3 is set in the laser resonator, and the pumping source 1 is set at the input end of the laser resonator. The frequency doubling crystal 3 is a quarter-wave plate made of neodymium-doped oxycalcium borate crystal.

[0018] The quarter-wave plate of the neodymium-doped oxycalcium borate crystal includes: Nd:GdCOB, Nd:YCOB and Nd:GdYCOB, wherein the doping concentration of Nd is 0.0001at%-20at%.

[0019] Preferably, the doping concentration of Nd is 1 at %-10 at %.

[0020] The quarter-wave plate of the neodymium-doped calcium borate crystal oxysalt crystal is cut in the phase-matching direction, and the thickness in the light-passing direction is (n+1 / 4)λ, which is betwee...

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Abstract

The invention discloses a green laser based on calcium oxide borate salt crystal, wherein the green laser comprises a pumping source, a laser resonant cavity and a frequency doubling crystal, the frequency doubling crystal is arranged in the laser resonant cavity, the pumping source is arranged at the input end of the laser resonant cavity, the green laser is characterized in that the frequency doubling crystal is a 1 / 4 wave plate processed by calcium oxide borate salt crystal doped with neodymium. Aiming at the defects and lacks of the current green laser, the 1 / 4 wave plate processed by calcium oxide borate salt crystal having laser and nonlinear effects is used for reducing the noise of the green laser of the frequency doubling in the low cavity to realize low-noise green laser output.

Description

technical field [0001] The invention relates to a green laser based on oxycalcium borate crystal, which realizes the low-noise output of the green laser by using the quarter-wave plate of the oxycalcium borate crystal. Background technique [0002] The all-solid-state green laser has high energy conversion efficiency, good beam quality, small size, long life, and convenient use. It can be widely used in optical information storage, underwater communication, color display and other fields, and has a broad market. [0003] Intracavity frequency doubling is currently the most commonly used method for all-solid-state lasers to generate green light output. Due to the high power density of the fundamental frequency in the laser resonator cavity, it is easy to achieve high harmonic conversion efficiency by placing the frequency doubling crystal in the cavity. However, there is a serious "green noise" problem in intracavity frequency-doubling lasers, and the output intensity of gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/108H01S3/081
Inventor 韩学坤严冬
Owner 青岛镭视光电科技有限公司