Optical parameter amplification wave length tuning device based on periodic polarized crystal

A technology of wavelength tuning and optical parameters, which is applied in the field of optical parametric amplification laser systems, can solve the problems of small nonlinear coefficient, low damage threshold, unstable physical and chemical properties, etc., and achieve high amplification gain, optimized tuning, and simple structure.

Inactive Publication Date: 2008-10-22
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

The nonlinear crystals used are KDP (KH 2 PO 4 , Potassium dihydrogen phosphate), ADP (NH 4 h 2 PO 4 , ammonium dihydrogen phosphate), LiNbO 3 (lithium niobate) and BNN (Ba 2 NaNb 5 o 15 , barium sodium niobate), etc., at this stage, a complete theory of parameter interaction was established theoretically, but due to the small nonlinear coefficients of these crystals used, or unstable physical and chemical properties, and low damage thresholds, etc., they were silent for a long time. for a long time

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  • Optical parameter amplification wave length tuning device based on periodic polarized crystal

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[0022] see first figure 1 , figure 1 It is a structural schematic diagram of an optical parameter amplification wavelength tuning device based on a periodically polarized crystal in the present invention. It can be seen from the figure that the optical parameter amplification wavelength tuning device based on periodically polarized crystals of the present invention includes: Nd:YAG pumping laser 1, BBO frequency doubling crystal 2, broadband signal laser 3, micro-shifter 4, total reflection Mirror 5, lens 6, PPLN crystal 7 and temperature control system 8, the positional relationship of the above components is as follows:

[0023] The 1064nm pumping light produced by the Nd:YAG pumping laser 1 is injected into the PPLN crystal 7 through the BBO frequency doubling crystal 2 and the pumping light is doubled to 532 nm, and the signal generated by the broadband signal laser 3 After the light is reflected by the total reflection mirror 5, it is refracted into the PPLN crystal 7 t...

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Abstract

The invention is an optical parameter amplification wavelength tuner based on periodical polarized crystal, comprising: Nd:YAG pumped light laser, BBO frequency doubling crystal, wideband signal light laser, microshifter, total reflector, lens, PPLN crystal and temperature control system, using the miroshifter adhering to the total reflector to change incident angle in the periodical polarized crystal so as to change noncollinear included angle and make wideband signal light generate optical parameter amplified outputs of different wavelengths at different angles to implement fast and continuous wavelength tuning in a larger wavelength range in infrared region. And the invention has features of method simple and convenient, wide wavelength application range, and high tuning speed.

Description

technical field [0001] The invention relates to an optical parameter amplification laser system, in particular to an optical parameter amplification wavelength tuning device based on periodically polarized crystals. The device has ultra-wide wavelength tuning ranges at the communication bands 1300nm and 1500nm with high utilization value. Background technique [0002] Based on the wavelength tuning of optical parametric generation (hereinafter referred to as OPG), optical parametric amplification (hereinafter referred to as OPA) and optical parametric oscillation (hereinafter referred to as OPO), various structures have been explored in the world to obtain a large tuning range, The spectral line width is narrow and evenly tuned. The pump source is a variety of solid-state lasers and their harmonics. The tuning methods include temperature, angle, and electro-optical tuning. Among them, the speed of temperature tuning is relatively slow, and the device for electro-optic tuning...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/39G02F1/35G02F1/355G05D23/19
Inventor 胡忞远冷雨欣梁晓燕徐至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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