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Tunable single longitudinal mode 2[mu]m solid laser based on bipyramid resonant cavity

A solid-state laser, single-longitudinal mode technology, applied in the laser, laser parts, optical resonator structure/shape and other directions, can solve the problems of laser beam quality degradation, output power drop, poor anti-interference ability, etc., to improve the anti-interference ability. Interference ability, increased cavity length, easy to adjust effect

Active Publication Date: 2015-12-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing single longitudinal mode 2μm solid-state laser has poor frequency stability, poor anti-interference ability, and is easily affected by environmental conditions such as vibration, temperature change, and airflow disturbance, which in turn leads to the deterioration of the laser beam quality and the decline in output power. , providing a tunable single longitudinal mode 2μm solid-state laser based on a dual pyramid resonator

Method used

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  • Tunable single longitudinal mode 2[mu]m solid laser based on bipyramid resonant cavity

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specific Embodiment approach 1

[0010] Specific implementation mode one: the following combination figure 1 Describe this embodiment mode, the tunable single longitudinal mode 2 μm solid-state laser based on double pyramid resonator described in this embodiment mode, it includes pump light injection mirror 1, Ho:YAG crystal 2, polarizer 3, first corner cube prism 4 , double F-P etalon 5, second corner cube 6 and quarter wave plate 7;

[0011] The 1.9 μm pump light is incident into the Ho:YAG crystal 2 through the pump light injection mirror 1, and the Ho:YAG crystal 2 generates left-direction propagating oscillating light and right-propagating oscillating light under the pumping of the 1.9 μm pumping light;

[0012] The oscillating light propagating in the right direction is incident on the first corner cube prism 4 after passing through the transmission of the polarizer 3, and the oscillating light propagating in the right direction passes through total internal reflection three times in the first corner cu...

specific Embodiment approach 2

[0015] Specific embodiment two: this embodiment is further described to embodiment one, and the first corner cube prism 4 and the second corner cube prism 6 constitute double corner cube ring resonators, the first corner cube prism 4 and the second corner cube prism 6 The structure is the same, the diameter of the incident surface is 10mm-100mm, the incident surface is coated with a high-transmittance film of 1.9μm-2.1μm, and the curvature of the reflective surface is 0-1000mm.

specific Embodiment approach 3

[0016] Specific embodiment three: this embodiment will further explain embodiment one, the double F-P etalon 5 is placed at the Brewster angle, the transmittance of the double F-P etalon 5 to 2.1 μm oscillating light is 70%-100%, and the thickness is 0.01 mm-15mm.

[0017] In this embodiment, a double-pyramid ring resonator is used, and a double F-P etalon placed at Brewster's angle is added to obtain a narrower laser line output. The double-pyramid ring resonant cavity and the double F-P etalon 5 are processed into one body.

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Abstract

The invention provides a tunable single longitudinal mode 2[mu]m solid laser based on a bipyramid resonant cavity, belonging to the optical field. The invention aims to solve the problem that a single longitudinal mode 2[mu]m solid laser in the prior art is bad in stability and interference resistance capability, and is easy to be influenced by vibration, changeable temperature, disturbed air flow or other environmental conditions, and the light beam quality of the laser is deteriorated and the output power is decreased. Pump light is emitted into an Ho:YAG crystal through a pump light injection mirror to generate left and right propagation oscillation light; the right propagation oscillation light passes through a polaroid, a first pyramid prism, a double F-P etalon, a second pyramid prism, a quarter wave plate, the pump light injection mirror, the Ho:YAG crystal, and a polaroid; and s light is output by the polaroid; the left propagation oscillation light passes through the quarter wave plate, the second pyramid prism, the double F-P etalon, the first pyramid prism, and the polaroid, and s light is output by the Polaroid; and the bidirectional output of the 2[mu]m laser light is realized on the polaroids. The tunable single longitudinal mode 2[mu]m solid laser is applied to laser technology.

Description

technical field [0001] The invention relates to a solid-state laser and belongs to the technical field of solid-state lasers. Background technique [0002] Because the solid-state laser with single longitudinal mode output has the characteristics of good coherence, narrow spectral line width, and good beam quality, it has very important applications in laser remote sensing, coherent radar, nonlinear conversion, etc., and is an important research in laser technology. and development direction. In particular, its coherence length is long, which can meet the light source requirements of lidar. The output wavelength of the single longitudinal mode 2μm solid-state laser is in the eye-safe band and the weak absorption band of the atmosphere. It has excellent atmospheric transmission characteristics and is very suitable for medium and long-distance detection in the atmosphere. Based on the unique properties of the 2μm band, the single longitudinal mode 2μm solid-state laser It ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/08H01S3/098H01S3/105
Inventor 戴通宇鞠有伦吴婧姚宝权王月珠
Owner HARBIN INST OF TECH
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