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

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

Active Publication Date: 2017-01-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lowest A1 symmetric vibration mode of potassium titanyl phosphate crystal is 268.5cm -1 , the vibration mode has both infrared and Raman activity, and a tunable terahertz radiation source in the frequency range of 3.17THz to 6.13THz 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 phosphate crystal and its application
  • A terahertz parameter source based on potassium titanyl phosphate crystal and its application
  • A terahertz parameter source based on potassium titanyl phosphate crystal and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A terahertz parameter source based on potassium titanyl phosphate crystal, including a laser pumping system, a terahertz parameter device and a cooling system; the terahertz parameter device includes a potassium titanyl phosphate crystal, and the laser pumping system emits pumping The laser light is irradiated along the terahertz parametric device, and the excited exciton scattering process of the potassium titanyl phosphate crystal constitutes the terahertz parameter source.

[0037] The terahertz wave output frequency range of the terahertz parameter source is 3.17-6.13THz.

[0038] 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 laser emitted by the laser pumping system travels along the rear cavity mirror of the terahertz parametric device, potassium titanyl phosphate crystal and The output mirrors of the terahertz parametric device emit sequentiall...

Embodiment 2

[0054] Such as Figure 5 shown.

[0055] A terahertz parameter source based on potassium titanyl phosphate crystal, including a laser pumping system, a terahertz parameter device and a cooling system; the terahertz parameter device includes a potassium titanyl phosphate crystal, and the laser pumping system emits pumping The laser light is irradiated along the terahertz parametric device, and the excited exciton scattering process of the potassium titanyl phosphate crystal constitutes the terahertz parameter source.

[0056] The terahertz wave output frequency range of the terahertz parameter source is 3.17-6.13THz.

[0057] 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 laser emitted by the laser pumping system travels along the rear cavity mirror of the terahertz parametric device, potassium titanyl phosphate crystal and The output mirrors of the terahert...

Embodiment 3

[0073] Such as Figure 6 As shown, a terahertz parametric source based on potassium titanyl phosphate 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, and the angle Composed of a rotating table 7, a terahertz coupling component 8 silicon prism array and a nonlinear crystal potassium titanyl phosphate 5, the nonlinear crystal potassium titanyl phosphate 5 is in contact with the zox plane of the terahertz silicon prism coupling component 8 without gaps, a terahertz parametric device The rear cavity mirror 4, the nonlinear crystal potassium titanyl phosphate 5, the output mirror 6 of the terahertz parametric device and the terahertz silicon prism coupling part 8 are fixed on the angle rotation platform 7 together; the pump laser system resonator rear cavity mirror 12 1. Pump laser system resonator output mirror 17 forms the pum...

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Abstract

A terahertz parameter source based on a potassium titanyl phosphate crystal comprises a laser pumping system, a terahertz parametric device and a cooling system. The terahertz parametric device comprises the potassium titanyl phosphate crystal, pumping lasers emitted by the laser pumping system irradiate along the terahertz parametric device, and a terahertz parametric source is formed by a stimulated exciton scattering process of the potassium titanyl phosphate crystal. The output frequency range of terahertz waves is 3.17-6.13THz. The terahertz parametric device further comprises a rear cavity mirror and an output mirror, and the lasers emitted by the laser pumping system are emitted out through the rear cavity mirror, the potassium titanyl phosphate crystal and the output mirror in sequence. According to the terahertz parameter source based on the potassium titanyl phosphate crystal, the nonlinear crystal of potassium titanyl phosphate crystal is used, the crystal is high in nonlinear gain and high in damage threshold, and tunable terahertz radiation waves within the frequency range of 3.17THz to 6.13THz can be obtained through an angle tuning mode.

Description

technical field [0001] The invention relates to a terahertz parameter source based on a potassium titanyl phosphate crystal and an application thereof, belonging to the technical field of the terahertz parameter source. 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 pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B9/02H01B7/22
Inventor 张行愚王伟涛丛振华王青圃秦增光刘兆军陈晓寒唐关琦
Owner SHANDONG UNIV
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