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Tunable single longitudinal mode 2μm solid-state laser based on double pyramid resonator

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

Active Publication Date: 2018-09-07
HARBIN INST OF TECH
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  • Summary
  • 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 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 2μm solid-state laser based on double pyramid resonator

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specific Embodiment approach 1

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

[0011] The 1.9μm 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-propagating oscillating light and right-propagating oscillating light under the pumping of the 1.9 μm pump light;

[0012] The right-propagating oscillating light passes through the transmission of the polarizer 3 and then enters the first corner cube prism 4 . The right-propagating oscillating light undergoes three total internal reflections in the first corner cube The propagating oscillating light is incident on the double F-P...

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment further describes Embodiment 1. The first cube corner prism 4 and the second cube cube 6 form a double cube ring resonator. The first cube corner prism 4 and the second cube cube 6 The structure is the same, the diameter of the incident surface is 10mm-100mm, the incident surface is coated with a high transmission film of 1.9μm-2.1μm, and the curvature of the reflection surface is 0-1000mm.

specific Embodiment approach 3

[0016] Embodiment 3: This embodiment further describes Embodiment 1. The double F-P etalon 5 is placed at Brewster's 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 double F-P etalons placed at Brewster's angle are added to obtain a narrower laser line output. The double pyramid ring resonator 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, which belongs to the technical field of solid-state lasers. Background technique [0002] The solid-state laser with single longitudinal mode output has the characteristics of good coherence, narrow spectral line width and good beam quality, which makes it have 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...

Claims

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Application Information

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Patent Type & Authority Patents(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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