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Solid single-laser dual-wavelength pumping optical difference frequency terahertz wave generating device

A laser, dual-wavelength technology, applied in the field of terahertz waves, to achieve the effect of simple and compact structure, good working stability, high power and reliable operation

Active Publication Date: 2019-12-31
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a solid-state single-laser dual-wavelength pumping optical difference-frequency terahertz wave generation device, which solves the problem that the existing dual-wavelength pumping optical difference-frequency terahertz wave generation technology cannot simultaneously satisfy simple and compact structure, good stability and high power. technical issues

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  • Solid single-laser dual-wavelength pumping optical difference frequency terahertz wave generating device
  • Solid single-laser dual-wavelength pumping optical difference frequency terahertz wave generating device
  • Solid single-laser dual-wavelength pumping optical difference frequency terahertz wave generating device

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Embodiment 1

[0056] This embodiment 1 provides a specific structure of a solid-state single laser dual-wavelength pumping optical difference frequency terahertz wave generation device, including a single laser based on double-doped holmium thulium ions, a holmium thulium laser beam shaper, an optical frequency difference device, and Terahertz wave filter; where:

[0057] A single laser based on double-doped holmium-thulium ions is used to output a dual-wavelength pumping source of a solid-state 2.09μm holmium laser and a 2.02μm thulium laser; the 2.09μm holmium laser is used as the signal light generated by the optical difference frequency terahertz wave, and the 2.02μm thulium The laser is used as the pumping light generated by the optical difference frequency terahertz wave; the single laser structure design based on double-doped holmium thulium ions is unique, such as image 3 As shown, it includes a single laser cavity 111, a holmium-thulium laser module 112 and a pulsed laser modulato...

Embodiment 2

[0080] Embodiment 2 provides a specific structure of an optical difference-frequency terahertz wave generation device pumped by a single fiber laser with dual wavelengths. The device includes the same parts as in Embodiment 1, including a single laser 11 based on double-doped holmium-thulium ions, a holmium-thulium laser beam shaper 12 , an optical frequency difference device 13 and a terahertz wave filter 14 . Among the four parts included, the only difference between embodiment 2 and embodiment 1 is the single laser 11 based on double-doped holmium thulium ions, while the other three parts are the same. See embodiment 1 for the specific description of the same part.

[0081] The difference between embodiment 2 and embodiment 1 lies in the single laser 11 based on double-doped holmium thulium ions. In Embodiment 1, the single laser 11 based on double-doped holmium-thulium ions is composed of a single laser resonator 111, a holmium-thulium laser module 112 and a pulsed laser ...

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Abstract

The invention provides a solid single-laser dual-wavelength pumping optical difference frequency terahertz wave generating device. The generating device comprises a single laser based on double-dopedholmium and thulium ions used for outputting a dual-wavelength pumping source, wherein the dual-wavelength pumping source is holmium laser and thulium laser based on the strongest intrinsic radiationwavelength of double-doped holmium and thulium ions, and output is generated by holmium and thulium ion energy correlation transfer saturation amplification; a holmium and thulium laser beam shaper for changing the sizes of light spots of the holmium laser and the thulium laser to obtain a shaped dual-wavelength pumping source; an optical difference frequency device used for generating terahertz waves by utilizing the shaped dual-wavelength pumping source in the optical difference frequency conversion process; and a terahertz wave screener for filtering the residual dual-wavelength pumping source after the optical difference frequency conversion process is finished to obtain the terahertz wave. The solid single-laser dual-wavelength pumping optical difference frequency terahertz wave generating device disclosed by the invention can simultaneously meet the requirements of simple and compact structure, good stability and high power.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of terahertz waves, in particular to a solid-state single laser dual-wavelength pumping optical difference frequency terahertz wave generation device. Background technique [0002] Terahertz technology has important research value and application prospects in basic research disciplines such as physics, chemistry, and life sciences, as well as applied disciplines such as medical imaging, safety inspection, product inspection, space communication, and weapon guidance. [0003] The optical difference frequency method is a common method for generating terahertz waves. In the optical difference frequency method, the key technology is to obtain a dual-wavelength pumping source with high power and close wavelength. The methods for obtaining dual-wavelength pumping sources usually include single-laser dual-wavelength technology, dual-laser dual-wavelength technology, single optical parametric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35G02F1/39H01S1/02H01S3/00
CPCG02F1/353G02F1/39H01S1/02H01S3/0092
Inventor 杜仕峰彭钦军薄勇王志超张申金高宏伟许祖彦
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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