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A terahertz parameter source based on potassium titanyl arsenate crystal and its application

A technology of potassium titanyl arsenate and terahertz, which is applied in the field of terahertz parametric sources, can solve the problem of not finding terahertz parametric sources, etc., and achieve the effect of high nonlinear gain and high damage threshold of crystals

Active Publication Date: 2017-01-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lowest A1 symmetrical vibration mode of potassium titanyl arsenate crystal is 233.8cm -1 , the vibration mode has both infrared and Raman activity, and a tunable terahertz radiation source in the frequency range of 3.5THz to 6.5THz can be obtained by angle tuning, extending the LiNbO-based 3 The terahertz frequency range of the terahertz parametric source of the crystal, so far no terahertz parametric source realized by the crystal has been found

Method used

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  • A terahertz parameter source based on potassium titanyl arsenate crystal and its application
  • A terahertz parameter source based on potassium titanyl arsenate crystal and its application
  • A terahertz parameter source based on potassium titanyl arsenate crystal and its application

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Comparison scheme
Effect test

Embodiment 1

[0033] A terahertz parameter source based on potassium titanyl arsenate crystal, including a laser pumping system, a terahertz parameter device and a cooling system; the terahertz parameter device includes a potassium titanyl arsenate crystal, and the laser pumping system emits The pump laser is irradiated along the terahertz parametric device, and the terahertz parametric source is formed by the excited exciton scattering process of the potassium titanyl arsenate crystal.

[0034] The terahertz wave output frequency range of the terahertz parameter source is 3.5-6.5THz.

[0035] The terahertz parametric device also includes a rear cavity mirror of the terahertz parametric device and an output mirror of the terahertz parametric device. and the output mirror of the terahertz parametric device are emitted sequentially.

[0036]The potassium titanyl arsenate crystal is nonlinear crystal potassium titanyl arsenate. The laser beam generated by the laser pumping system passes thro...

Embodiment 2

[0051] Such as Figure 4 shown.

[0052] A terahertz parameter source based on potassium titanyl arsenate crystal, including a laser pumping system, a terahertz parameter device and a cooling system; the terahertz parameter device includes a potassium titanyl arsenate crystal, and the laser pumping system emits The pump laser is irradiated along the terahertz parametric device, and the terahertz parametric source is formed by the excited exciton scattering process of the potassium titanyl arsenate crystal.

[0053] The terahertz wave output frequency range of the terahertz parameter source is 3.5-6.5THz.

[0054] The terahertz parametric device also includes a rear cavity mirror of the terahertz parametric device and an output mirror of the terahertz parametric device. and the output mirror of the terahertz parametric device are emitted sequentially. The potassium titanyl arsenate crystal is nonlinear crystal potassium titanyl arsenate.

[0055] The cutting direction of th...

Embodiment 3

[0070] Such as Figure 6 As shown, a terahertz parametric source based on potassium titanyl arsenate crystal as described in Example 1, wherein the terahertz parametric device consists of the rear cavity mirror 4 of the terahertz parametric device, the output mirror 6 of the terahertz parametric device, Angle rotation stage 7, terahertz coupling component 8 silicon prism array and nonlinear crystal potassium titanyl arsenate 5, the nonlinear crystal potassium titanyl arsenate 5 is in contact with the zox surface of the terahertz silicon prism coupling component 8 without a gap, too The rear cavity mirror 4 of the Hertz parametric device, the nonlinear crystal potassium titanyl arsenate 5, the output mirror 6 of the terahertz parametric device and the terahertz silicon prism coupling part 8 are fixed on the angle rotation stage 7 together; the resonant cavity of the pump laser system The rear cavity mirror 12 and the pump laser system resonator output mirror 17 form the pump la...

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Abstract

Disclosed is a terahertz parameter source on the basis of potassium titanium oxide arsenate crystals. The terahertz parameter source comprises a laser pumping system, a terahertz parametric device and a cooling system, wherein the terahertz parametric device comprises the potassium titanium oxide arsenate crystals, pumped laser emitted by the laser pumping system illuminates along the terahertz parametric device, and the terahertz parameter source is formed by scattering process of stimulated excitons of the potassium titanium oxide arsenate crystals. The output frequency range of terahertz waves is from 3.5THz to 6.5THz. The terahertz parametric device further comprises a rear cavity mirror and an output mirror, and the laser pumping system emits the laser sequentially along the rear cavity mirror of the terahertz parametric device, the potassium titanium oxide arsenate crystals and the output mirror of the terahertz parametric device. According to the terahertz parameter source and the application thereof on the basis of the potassium titanium oxide arsenate crystals, nonlinear crystals of potassium titanium oxide arsenate are used, the nonlinearity gain of the crystals is high, meanwhile, high damage threshold is achieved, and tunable terahertz radiation waves in the frequency range from 3.5THz to 6.5THz can be obtained through an angle tuning mode.

Description

technical field [0001] The invention relates to a terahertz parameter source based on potassium titanyl arsenate crystal and an application thereof, belonging to the technical field of terahertz parameter sources. Background technique [0002] Exciton scattering is an important technique for generating terahertz radiation. Visible, near-infrared, and tunable lasers in the terahertz band can be obtained through exciton scattering of certain crystals. Compared with terahertz sources of other technologies, such as optical rectification, quantum cascade lasers, and electrical terahertz sources, this terahertz parametric source based on stimulated exciton scattering has the advantages of package integration, room temperature operation, convenient use, Easy to tune, narrow line width and other advantages. Terahertz parametric sources have always been one of the research hotspots in the field of terahertz generation. There have been a large number of reports on terahertz parametr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/30H01S3/16
Inventor 张行愚肖炅王伟涛王青圃丛振华陈晓寒刘兆军秦增光
Owner SHANDONG UNIV
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