Partial end surface pumping mixing chamber slab optical parametric oscillator

An optical parametric oscillator and end-pumping technology, applied in the field of laser technology and nonlinear frequency conversion, can solve the problem that OPO technology is difficult to obtain high-power, high-beam quality laser output, etc., and achieve high output power and beam quality. Good results

Inactive Publication Date: 2014-04-02
NANJING UNIV
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Problems solved by technology

[0008] Technical problem to be solved: Aiming at the deficiencies of the prior art, the present invention provides a partially end-pumped hybrid cavity slab optica

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  • Partial end surface pumping mixing chamber slab optical parametric oscillator
  • Partial end surface pumping mixing chamber slab optical parametric oscillator
  • Partial end surface pumping mixing chamber slab optical parametric oscillator

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[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like figure 1 As shown, the partially end-pumped hybrid cavity slab optical parametric oscillator includes a nonlinear crystal 2 and a hybrid cavity, the nonlinear crystal 2 is a quasi-phase-matched crystal in the form of a parametrically transformed slab; the oscillator adopts a hybrid cavity , the mixing cavity is composed of a plano-concave circular lens 1 and a plano-convex cylindrical lens 3, and has different cavity shapes in the horizontal direction and the vertical direction.

[0027] like figure 2 As shown, a plano-concave stable cavity is used in the vertical direction, and the stable cavity part is composed of the concave surface of the concave circular lens 1 and the plane of the plano-convex cylindrical lens 3 .

[0028] like image 3 As shown, a positive branch confocal unstable cavity is used in the horizontal direction. The positive branch con...

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Abstract

The invention discloses a partial end surface pumping mixing chamber slab optical parametric oscillator, which comprises a nonlinear crystal and a mixing chamber. The nonlinear crystal is of a slab structure. The mixing chamber consists of a plano-concave circular lens and a plano-convex cylindrical lens. Pumping light of an elongated light spot is used for pumping from the end surface of the crystal. According to experiments, laser with high output power and good light beam quality can be finally obtained by using the partial end surface pumping mixing chamber slab optical parametric oscillator.

Description

technical field [0001] The invention relates to the field of laser technology and nonlinear frequency conversion, in particular to an optical parametric oscillator based on an unstable cavity. Background technique [0002] In spectroscopy, light with a wavelength ranging from 0.75 microns to 1000 microns is called infrared, and light from 3 to 20 microns is generally called mid-infrared. The light in this band has many characteristics, especially the 3 to 5 micron band. The light in this band has low loss when transmitted in the atmosphere, and it is a very important atmospheric infrared window; in addition, this band also covers a lot of hydrocarbon gases and Absorption peaks of many other toxic gases. Therefore, the laser in this band can be used for directional infrared interference, laser ranging, spectral analysis, air pollutant monitoring, toxic gas detection, etc. [0003] At present, there are roughly the following ways to obtain mid-infrared lasers: gas lasers, qu...

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Application Information

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IPC IPC(8): H01S3/06H01S3/08G02F1/35
Inventor 吕新杰蒋旭东刘奕辰居盼盼赵刚祝世宁
Owner NANJING UNIV
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