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A three-dimensional terahertz wave parametric oscillator

A terahertz oscillator technology, applied in the field of three-dimensional terahertz wave parametric oscillators, can solve the problems of low efficiency of terahertz radiation sources, and achieve the effects of increasing interaction volume, reducing output loss, and increasing optical conversion efficiency

Inactive Publication Date: 2020-12-01
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a three-dimensional terahertz wave parametric oscillator to solve the problem of low efficiency of existing terahertz radiation sources

Method used

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  • A three-dimensional terahertz wave parametric oscillator

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] like figure 1 As shown, a three-dimensional terahertz wave parametric oscillator includes a pump source, a GaAs crystal 7, and reflectors and parabolic mirrors arranged around the GaAs crystal 7; the pump source is provided by KD * P crystal 2, polarizer 3, Nd:YAG laser pump module 4, first reflector 1, second reflector 8, third reflector 9, fourth reflector 10, fifth reflector 11 and sixth reflector Composed of mirrors 12, the pumping light 5 sent by the pumping source is reflected by the first reflector 1, the second reflector 8, the third reflector 9, the fourth reflector 10, the fifth reflector 11 and the sixth reflector 12 Resonant amplification in the resonant cavity formed;

[0026] The pump source used in this embodiment is a Nd:YAG pulsed laser with a wavelength of 1064 nm, a pulse width of 15 ns, a repetition rate of 5 Hz, a beam diameter o...

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Abstract

The invention discloses a three-dimensional terahertz wave parametric oscillator, comprising a pump source, a GaAs crystal, a mirror and a paraboloid mirror arranged around the GaAs crystal; The pumpsource is made up of KD*P crystal, Polarizer, Nd: A YAG laser pumping module is composed of a first mirror, a second mirror, a third mirror, a fourth mirror, a fifth mirror and a sixth mirror. The pumping light emitted from the pumping source is resonantly amplified in a resonant cavity composed of a first mirror, a second mirror, a third mirror, a fourth mirror, a fifth mirror and a sixth mirror.In the process of optical parameters, Stokes light and pump light in the cavity can be recycled, and the efficiency of pump light can be improved effectively. Six terahertz waves can be generated byone pump beam, and the optical conversion efficiency is effectively increased.

Description

technical field [0001] The invention belongs to the application field of terahertz wave technology, and in particular relates to a three-dimensional terahertz wave parametric oscillator. Background technique [0002] Terahertz (THz) wave refers to the frequency between 0.1-10THz (1THz=10 12 Hz) range, between millimeter waves and infrared waves. Terahertz waves have broad application prospects in spectral detection, imaging, remote sensing, communications, biomedicine, and military affairs. So far, there is still a lack of terahertz radiation sources with high power, high efficiency, coherence, tunability, miniaturization, and room temperature operation. Terahertz parametric oscillators can generate high-power, tunable, coherent, room-temperature-operating terahertz radiation. But the existing problem is that the optical conversion efficiency of the terahertz wave parametric oscillator is low. Contents of the invention [0003] The purpose of the present invention is t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 李忠洋张云鹏张红涛徐娟谭联李永军袁斌袁胜陈建明
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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