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A High Efficiency Terahertz Wave Parametric Oscillator

A terahertz oscillator technology, applied in the field of high-efficiency terahertz wave parametric oscillators, can solve the problems of low power and low efficiency of terahertz radiation sources, and achieve the effect of improving utilization efficiency and reducing output loss

Inactive Publication Date: 2021-01-29
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 high-efficiency terahertz wave parametric oscillator to solve the technical problems of low power and low efficiency of existing terahertz radiation sources

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  • A High Efficiency Terahertz Wave Parametric Oscillator
  • A High Efficiency Terahertz Wave Parametric Oscillator

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] Such as figure 1 Shown is a structural principle diagram of an embodiment of a high-efficiency terahertz wave parametric oscillator of the present invention. It can be seen from the figure that the terahertz radiation source includes: a pump source 1, a first mirror 3, a second mirror 4, a first resonant cavity mirror 5, a second resonant cavity mirror 6, a first period inversion GaP crystal 8 , the second period inversion GaP crystal 9 , the third period inversion GaP crystal 10 , and the fourth period inversion GaP crystal 11 .

[0028]The pump source 1 used in this embodiment is a quasi-continuous laser with a wavelength of 536.5nm, a pulse width of 30ns, a repetition rate of 100KHz, and a power density of 50MW / cm 2 .

[0029] The pump light 2 emitted by the pump source 1 is reflected by the first reflector 3 and the second reflector 4, and partl...

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Abstract

A high-efficiency teraHertz wave parametric oscillator comprises a pumping source and a periodic reversal GaP crystal and a reflection source. The pumping source performs circulating pumping of the periodic reversal GaP crystal to generate Stokes light and THz waves through adoption of quasi-phase-matching optical parameter effect. The generated multi-beam Stokes light and the pump light to perform collinear spreading, and the generated multi-beam THz waves are perpendicular to the surface of the periodic reversal GaP crystal for emission. In the optical parameter process, the Stokes light andthe pump light are circularly used so as to effectively improve the pump light utilization efficiency. The generated THz waves are perpendicular to the surface of the periodic reversal GaP crystal for emission with no need for any coupled output device so as to effectively reduce the THz output loss. One beam of pump light can generate multiple beams of THz waves to effectively improve the optical conversion efficiency.

Description

technical field [0001] The invention relates to a high-efficiency terahertz wave parametric oscillator, which belongs to the application field of terahertz wave technology. Background technique [0002] Terahertz (THz) wave refers to the frequency of 0.1-10THz, 1THz=10 12 Electromagnetic waves in the 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]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 邴丕彬王花谭联袁胜李忠洋袁斌李永军邓荣鑫周玉
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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