Stokes light source based on kalium titanyl arsenate crystal and working method and application of stokes light source

A technology of potassium titanyl arsenate and Stokes, which is applied in the field of Stokes light sources, can solve the problems of Stokes light sources being difficult to tune, narrow tunable range, and complicated tuning methods, and achieve stable physical and chemical properties, The effect of mature growth technology and high nonlinear gain

Active Publication Date: 2015-11-11
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The Stokes light source tuning method in the prior art is complicated and the tunable range is narrow. For example, the solid-state Raman laser realizes the wavelength tuning of the Stokes light by changing the wavelength of the pump light and the type of Raman crystal.
Most of the traditional Stokes light sources require a cooling system to cool the working substance, the structure is complex, and the obtained Stokes light source is not easy to tune and has a wide linewidth

Method used

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  • Stokes light source based on kalium titanyl arsenate crystal and working method and application of stokes light source
  • Stokes light source based on kalium titanyl arsenate crystal and working method and application of stokes light source

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Embodiment 1

[0034] A Stokes light source based on a potassium titanyl arsenate crystal, comprising a pumping laser system and a Stokes resonant cavity; the Stokes resonant cavity comprises a potassium titanyl arsenate crystal, a rear cavity of the resonant cavity Mirror 1 and Stokes output mirror 4, the pump laser light emitted by the pump laser system enters the Stokes resonator, along the rear cavity mirror 1 of the resonator, the potassium titanyl arsenate crystal and the Stokes The output mirrors 4 output sequentially. The excited exciton scattering process of the potassium titanyl arsenate crystal constitutes a Stokes light source; the pumping laser system generates pumping light.

Embodiment 2

[0036] The difference of the Stokes light source based on potassium titanyl arsenate crystal as described in Example 1 is that the potassium titanyl arsenate crystal is nonlinear crystal potassium titanyl arsenate 3 . The pump light generated by the pump laser system passes through the nonlinear crystal potassium titanyl arsenate 3 in the Stokes resonator, and the nonlinear crystal potassium titanyl arsenate 3 has Raman and infrared active vibration modes, generating Scattering of excited excitons, resulting in a nonlinear parametric process. By changing the angle at which the pump light is incident into the nonlinear crystal potassium titanyl arsenate 3, the tuned output of the Stokes light is realized.

Embodiment 3

[0038]The Stokes light source based on potassium titanyl arsenate crystal as described in Example 2, the difference is that the crystal cutting direction of the nonlinear crystal potassium titanyl arsenate 3 is θ=90°, φ=0° , the θ is the angle between the pump light and the z-axis of the nonlinear crystal, and φ is the angle between the x-axis of the nonlinear crystal and the side of the nonlinear crystal, that is, the angle between the x-axis and the xz plane of the nonlinear crystal. The length of the nonlinear crystal is l, the width of the nonlinear crystal is d, and the thickness is h; the size of all nonlinear crystals in the present invention can be selected according to the specific pump light spot size and incident angle requirements.

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Abstract

The invention relates to a stokes light source based on kalium titanyl arsenate crystal and a working method and an application of the stokes light source. The stokes light source comprises a pumping laser system, a stokes resonant cavity and a frequency-doubling system, wherein the stokes resonant cavity comprises kalium titanyl arsenate crystal, a rear cavity mirror of the resonant cavity and a stokes output mirror; pumping laser enters the stokes resonant cavity at a certain angle, and is emitted along the rear cavity mirror of the resonant cavity, the kalium titanyl arsenate crystal and the stokes output mirror; the stokes light source is formed by a scattering process of an excimer of the kalium titanyl arsenate crystal; tunable output of the stokes light can be realized by changing the angle at which the pumping light enters the stokes resonant cavity; and tunable stokes light within a range of (1077.88-1089.02)nm is obtained through angle tuning. The frequency-doubling system comprises frequency-doubling crystal and a light filter. Through frequency doubling of the stokes light source, a green light source within a range of (534-540)nm is obtained.

Description

technical field [0001] The invention relates to a Stokes light source based on potassium titanyl arsenate crystal and its working method and application, belonging to the technical field of infrared light sources. Background technique [0002] The Stokes light source tuning method in the prior art is complicated and the tuning range is narrow. For example, the solid-state Raman laser realizes the wavelength tuning of the Stokes light by changing the wavelength of the pump light and the type of Raman crystal. Most of the traditional Stokes light sources require a cooling system to cool the working substance, the structure is complex, and the obtained Stokes light source is not easy to tune and has a wide linewidth. [0003] In the prior art, potassium titanyl arsenate crystal is used as a laser light source as a working medium, mostly based on parametric oscillation or stimulated Raman scattering. Chinese patent CN101562311 discloses a potassium titanyl arsenate crystal all-...

Claims

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Application Information

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IPC IPC(8): H01S3/30H01S3/16H01S3/094H01S3/109H01S3/10
Inventor 张行愚臧婕王伟涛王青圃丛振华陈晓寒刘兆军
Owner SHANDONG UNIV
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