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A unidirectional traveling-wave annular 2μm single-frequency tunable solid-state laser

A solid-state laser, traveling wave technology, applied in the optical field, can solve the problems of low frequency stability, decreased output power, and degraded beam quality, and achieves the effect of simple structure, low insertion loss, and avoiding bad problems.

Active Publication Date: 2019-07-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of output power drop, beam quality degradation and low frequency stability in existing 2μm single-frequency solid-state lasers, and to provide a unidirectional traveling-wave annular 2μm single-frequency tunable solid-state laser

Method used

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  • A unidirectional traveling-wave annular 2μm single-frequency tunable solid-state laser
  • A unidirectional traveling-wave annular 2μm single-frequency tunable solid-state laser

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specific Embodiment approach 1

[0017] Specific implementation mode one: the following combination figure 1 Describe this embodiment mode. In this embodiment mode, a unidirectional traveling wave annular 2 μm single-frequency tunable solid-state laser includes a first plano-convex lens 1-1, a second plano-convex lens 1-2, a third plano-convex lens 1-3, and pump light Input mirror 2, F-P etalon 3, Tm:YAG crystal 4, mirror 5, dichroic mirror 6, optical rotator 7, half-wave plate 8 and output mirror 9;

[0018] The convex surfaces of the first plano-convex lens 1-1 and the second plano-convex lens 1-2 are opposite to form a coupling system;

[0019] The 785nm pump light incident to the coupling system is coupled by the coupling system and then incident on the pump light input mirror 2 at 45°; the 785nm pump light transmitted by the pump light input mirror 2 is incident on the F-P etalon 3, and passes through the F-P etalon 3 The transmitted 785nm pump light is incident on the Tm:YAG crystal 4, and the Tm:YAG c...

specific Embodiment approach 2

[0027] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the surfaces of the first plano-convex lens 1-1, the second plano-convex lens 1-2 and the third plano-convex lens 1-3 are all coated with 2 μm high-transparency The film has a focal length of 5mm to 200mm and a diameter of 1mm to 50mm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the pump light input mirror 2 is coated with a high-transparency film for 785nm pump light and a high-reflection film for 2 μm oscillating light at the same time. . Others are the same as in the first or second embodiment.

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Abstract

The invention provides a one-way traveling wave ring 2mum single frequency tunable solid-state laser, relates to a single frequency solid-state laser, belongs to the field of optics, and solves the problems of reduction of output power, deterioration of the beam quality and low frequency stability of the present 2mum single frequency solid-state laser. The pump light incident to the coupling system is coupled by the coupling system and then incident to a pump light input mirror, an F-P etalon and a crystal. The crystal generates oscillating light transmitting along the clockwise and counterclockwise direction under pumping of the pump light. The oscillating light transmitting along the counterclockwise direction is incident to the F-P etalon, the pump light input mirror and an output mirror. A part of oscillating light transmits out through the output mirror, and the residual part of oscillating light transmitting along the counterclockwise direction is incident to a dichroic mirror, athird plano-convex lens, a reflecting mirror, the crystal, the F-P etalon, the pump light input mirror and the output mirror through a half-wave plate and a light rotator to finally form gain to transmit out of the output mirror to become the 2mum single frequency laser.

Description

technical field [0001] The invention relates to a single-frequency solid-state laser, which belongs to the field of optics. Background technique [0002] 2μm single-frequency laser covers water molecules and CO 2 The absorption band of molecules such as molecules has the advantages of weak atmospheric absorption, strong penetrating ability to rain and fog, and safety to human eyes, making it play an important role in laser ranging, laser radar for various purposes, and medical diagnosis. effect. 2μm single-frequency lasers play an important role in the fields of atmospheric remote sensing, high-resolution spectroscopy, optical frequency calibration, and optical parametric oscillators. In addition, the 2μm single-frequency laser can be used as the preferred light source for Doppler coherent wind radar, high-precision optical interferometer, and differential absorption radar for measuring the temperature and concentration changes of the earth's atmosphere. [0003] The curr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/083H01S3/091H01S3/10H01S3/106
CPCH01S3/083H01S3/091H01S3/10061H01S3/1062
Inventor 姚宝权戴通宇刘高佑杨威段小明
Owner HARBIN INST OF TECH
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