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A terahertz wave enhanced terahertz wave radiation source

A hertz wave and radiation source technology, applied in the field of terahertz waves, can solve problems such as low efficiency and low power of terahertz radiation sources, and achieve the effect of enhancing output power and improving utilization efficiency

Inactive Publication Date: 2018-10-30
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a terahertz wave enhanced terahertz wave radiation source to solve the problems of low power and low efficiency of the existing terahertz radiation source

Method used

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  • A terahertz wave enhanced terahertz wave radiation source
  • A terahertz wave enhanced terahertz wave radiation source
  • A terahertz wave enhanced terahertz wave radiation source

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] as attached Figure 1-3 As shown, a terahertz wave enhanced terahertz wave radiation source includes a pump source, a first parabolic mirror 5, a second parabolic mirror 7, a first PPLN crystal C-1, a second PPLN crystal C-2, a first Three PPLN crystals C-3, ..., the first NPPLN crystal C-N;

[0034] The pumping source consists of the first reflector 1, KD * P crystal 2, polarizer 3, Nd:YAG laser pumping module 4 and the second mirror 9 are composed; Internal resonance amplification;

[0035] The back-and-forth oscillating pump light 10 is incident on the first PPLN crystal C-1, and the Stokes light 11, the first terahertz wave 6 and the second terahertz wave 8 are generated through the forward optical parametric effect, and the first terahertz wave 8 propagating forward along the X-axis The second terahertz wave 8 is generated by the forward optic...

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Abstract

The invention discloses a terahertz wave enhanced terahertz wave radiation source, including a pump source, a first parabolic mirror, a second parabolic mirror, a first PPLN crystal, a second PPLN crystal, a third PPLN crystal, ..., The N PPLN crystal; the pump source is composed of the first reflector, KD*P crystal, polarizer, Nd:YAG laser pump module and the second reflector; the pump light emitted by the pump source is passed by the first reflector Resonant amplification in the resonant cavity composed of the second reflector. The Stokes light generated by each PPLN crystal is equal, and multiple PPLN crystals can generate Stokes light with sufficient power, thereby amplifying the optical parametric effect and effectively enhancing the output power of the terahertz wave. In the optical parametric process, the terahertz wave as the seed light can amplify the optical parametric effect and effectively enhance the output power of the terahertz wave. In the optical parametric process, the resonant Stokes light and pump light in the cavity can be recycled, which effectively improves the utilization efficiency of the pump light.

Description

technical field [0001] The invention belongs to the technical field of terahertz waves, and in particular relates to a terahertz wave enhanced terahertz wave radiation source. Background technique [0002] Terahertz (THz) wave refers to coherent electromagnetic radiation with a frequency from 0.1THz to 10THz, corresponding to a wavelength of 30µm to 3mm. It is also called far-infrared radiation in the optical field. It is between infrared waves and millimeter waves. The long wavelengths coincide with millimeter waves and the short wavelengths coincide with infrared waves, both of which are part of the electromagnetic spectrum. Terahertz waves have broad application space in many fields: [0003] (1) Medical imaging and disease diagnosis [0004] Terahertz wave radiation has low energy and is non-ionizing, and has minimal damage to human tissues, and will not cause damage to the human body due to excessive doses like X-rays. Due to the spectral differences in water content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 李忠洋李君曹永梅
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER