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A quasi-phase-matched terahertz wave parametric oscillator

A quasi-phase matching, terahertz technology, applied in the field of terahertz wave applications, can solve the problems of low power and low efficiency of terahertz radiation sources

Active Publication Date: 2021-02-26
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a quasi-phase-matched 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 quasi-phase-matched terahertz wave parametric oscillator
  • A quasi-phase-matched terahertz wave parametric oscillator

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Embodiment Construction

[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0040] Such as figure 1 As shown, a quasi-phase-matched terahertz wave parametric oscillator includes a pump source 1, a first-period inversion GaP crystal 7, a second-period inversion GaP crystal 8, a third-period inversion GaP crystal 9, a fourth a period inversion GaP crystal 10, and mirrors arranged around the first period inversion GaP crystal 7, the second period inversion GaP crystal 8, the third period inversion GaP crystal 9 and the fourth period inversion GaP crystal 10, Reflectors include first reflector 3, second reflector 4, third reflector 5, fourth reflector 11, fifth reflector 12, sixth reflector 13, seventh reflector 14, eighth reflector 15 , the ninth reflector 16 and the tenth reflector 17;

[0041] The pump light 2 emitted by the pump source 1 is reflected by the first reflector 3 and the second reflector 4, and then passes through the t...

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Abstract

The invention discloses a quasi-phase-matching terahertz wave parametric oscillator, which includes a pump source, a first period inversion GaP crystal, a second period inversion GaP crystal, a third period inversion GaP crystal, and a fourth period inversion GaP crystal, and the reflection mirrors arranged around the GaP crystal of the first period inversion, the GaP crystal of the second period inversion, the GaP crystal of the third period inversion and the GaP crystal of the fourth period inversion, the reflection mirror includes the first reflection mirror, A second reflector, a third reflector, a fourth reflector, a fifth reflector, a sixth reflector, a seventh reflector, an eighth reflector, a ninth reflector, and a tenth reflector. The generated Stokes light oscillates back and forth in the ring resonator, which can effectively amplify the THz wave through the optical parametric effect; the collinear interaction between the pump light and the Stokes light effectively increases the interaction volume between the pump light, the Stokes light and the THz wave.

Description

technical field [0001] The invention belongs to the technical field of terahertz wave applications, and in particular relates to a quasi-phase-matched 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. GaP crystals have a large second-order nonlinear coefficient, and GaP crystals have a small absorption coefficient for terahertz waves. Therefore, using period-inversion GaP crystals as gain media, high-power terahertz waves can be generated through optical parametric effects. Contents of the invention [0003] The pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 谭联张红涛李忠洋袁斌李永军邴丕彬周玉陈建明
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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