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L-type optical pump gas terahertz laser resonant cavity based on that quartz wafer is beam splitting wafer and laser provided with resonant cavity

A laser resonator and quartz wafer technology, applied in the field of terahertz lasers, can solve the problems of insufficient use of pump lasers, poor quality of terahertz laser beams, inability to obtain high-efficiency, high-energy optically pumped gas terahertz lasers, etc. problem, to achieve the effect of small divergence, uniform distribution and large spot

Active Publication Date: 2015-04-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the quality of the obtained terahertz laser beam is poor in the existing terahertz resonator mode, the pump laser cannot be fully utilized, and an optically pumped gas terahertz laser with high efficiency and large energy cannot be obtained

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  • L-type optical pump gas terahertz laser resonant cavity based on that quartz wafer is beam splitting wafer and laser provided with resonant cavity
  • L-type optical pump gas terahertz laser resonant cavity based on that quartz wafer is beam splitting wafer and laser provided with resonant cavity

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specific Embodiment approach 1

[0015] Specific implementation mode one: refer to figure 1 Describe this embodiment in detail, the L-type optical pump gas terahertz laser resonator based on the quartz wafer described in this embodiment as the beam splitter, it includes: ZnSe anti-reflection window 1, Z-cut quartz wafer 2, total reflection Gold mirror 3, metal grid 4 and TPX window 5, short straight 6 and long straight 7;

[0016] One end of the short straight cylinder 6 is fixedly connected to the side wall of the long straight cylinder 7, and the inside of the short straight cylinder 6 communicates with the inside of the long straight cylinder 7, and the included angle between the central axis of the short straight cylinder 6 and the central axis of the long straight cylinder 7 is 90°;

[0017] One end of the long straight tube 7 is fixedly connected to the total reflection gold mirror 3, and the other end is fixedly connected to the TPX window 5. The Z-cut quartz wafer 2 and the metal grid sheet 4 are all ...

specific Embodiment approach 2

[0020] Specific embodiment 2: This embodiment is a further description of the L-type optically pumped gas terahertz laser resonator based on the quartz wafer as the beam splitter described in the specific embodiment 1. In this embodiment, the resonant cavity is filled with Terahertz gain gas, the terahertz gain gas is D 2 O, CH 3 F or NH 3 , the gas pressure is between 100Pa-3000Pa.

specific Embodiment approach 3

[0021] Specific embodiment three: This embodiment is a further description of the L-type optically pumped gas terahertz laser resonator based on the quartz wafer as the beam splitter described in specific embodiment one or two. In this embodiment, the metal mesh The reflectivity of the grid sheet 4 to the terahertz laser is between 0.1-0.3.

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Abstract

The inventions discloses an L-type optical pump gas terahertz laser resonant cavity based on that a quartz wafer is a beam splitting wafer, and a laser provided with the resonant cavity, and relate to the field of terahertz lasers. The resonant cavity and the laser provided with the resonant cavity solve the problems that under the prior terahertz resonant cavity manner, obtained terahertz laser beams are poor in quality, pumping lasers can not be completely used, and a high-efficiency and powerful-energy optical pump gas terahertz laser can not be obtained. The interaction of a metal lens and a metal woven-wire fence is utilized to obtain the terahertz laser with high quality lasers. Meanwhile, Z-cut quartz wafers serve as spectrum beam splitting wafers, and the pumping laser is completely used through the coupling of the Z-cut quartz wafers and the total-reflection metal lens for the pumping lasers. Therefore the L-type optical pump gas terahertz laser resonant cavity based on that the quartz wafer is the beam splitting wafer is suitable for the high-efficiency and powerful-energy optical pump gas terahertz laser.

Description

technical field [0001] The invention relates to an optically pumped gas terahertz laser resonant cavity, in particular to an L-type optically pumped gas terahertz laser resonant cavity based on a quartz wafer as a spectrum beam splitter. It belongs to the field of terahertz laser. Background technique [0002] The research on optically pumped gas terahertz lasers and their resonators was earlier. At present, optically pumped gas terahertz lasers are relatively mature. For the case of coaxial pumping, the resonators of optically pumped gas terahertz lasers are mainly divided into pinhole coupled terahertz lasers. The resonant cavity and the metal mesh grid are coupled to the terahertz resonant cavity. The pinhole-coupled terahertz resonator method can couple almost all the pump light into the terahertz gain region, and the pump light can be fully utilized, but it is not suitable for high pump energy due to the beam focusing and compression of the pump light In addition, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/08
Inventor 曲彦臣耿利杰赵卫疆任德明陈振雷杜军
Owner HARBIN INST OF TECH
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