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A dual-frequency terahertz parametric oscillator

A terahertz oscillator technology, applied in the field of dual-frequency terahertz wave parametric oscillators, can solve problems such as low efficiency and low power of terahertz radiation sources, reduce output loss, improve utilization efficiency, and increase optical conversion efficiency Effect

Active Publication Date: 2019-01-11
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

[0003] The purpose of the present invention is to provide a dual-frequency terahertz wave parametric oscillator to solve the problems of low power and low efficiency of existing terahertz radiation sources

Method used

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  • A dual-frequency terahertz parametric oscillator
  • A dual-frequency terahertz parametric oscillator
  • A dual-frequency terahertz parametric oscillator

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] Such asfigure 1 As shown, a dual-frequency terahertz wave parametric oscillator includes a KD*P crystal 2, a polarizer 3, a laser pump module 4, a GaAs crystal 13, and reflectors and parabolic mirrors arranged around the GaAs crystal 13;

[0032] The pump source consists of the first reflector 1, the second reflector 5, the third reflector 6, the fourth reflector 7, the fifth reflector 8, the sixth reflector 9, the seventh reflector 10, the eighth reflector 11. KD*P crystal 2, polarizer 3, and laser pumping module 4. The pumping light 12 emitted by the pumping source is guided by the first reflector 1, the second reflector 5, the third reflector 6, and the fourth reflector. Reflector 7, the fifth reflector 8, the sixth reflector 9, the seventh reflector 10, and the eighth reflector 11 are composed of resonant amplification in the resonant cavity; the p...

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Abstract

The invention discloses a dual-frequency terahertz wave parametric oscillator, comprising a KD*P crystal, a polarizer, a laser pumping module, a GaAs crystal, and a reflector and a paraboloid mirror arranged around the GaAs crystal. A pump source is provided by a first mirror, second mirror, third mirror, Fourth mirror, fifth mirror, a sixth mirror, a seventh mirror, an eighth mirror, a KD*P crystal, a polarizer, and a laser pumping module. 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, a sixth mirror, a seventh mirror, and an eighth 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. Four THz waves are emitted perpendicular to GaAs crystal, and no coupling device is needed to reduce the loss of THz wave.

Description

technical field [0001] The invention belongs to the application field of terahertz wave technology, and in particular relates to a dual-frequency 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. GaAs crystals have a large second-order nonlinear coefficient, and GaAs crystals have a small absorption coefficient for terahertz waves, so GaAs crystals are used as gain media to generate high-power terahertz waves through optical parametric effects. Contents of the invention [0003] The purpose of the present invention...

Claims

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Application Information

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IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 谭联张红涛周玉邴丕彬李忠洋袁斌李永军陈建明
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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