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High-vibration-resistance kilohertz miniaturized laser

A laser, high-resistance technology, applied in lasers, laser parts, laser parts and other directions, can solve the problems of reducing the size of the laser, poor adaptability, difficult to meet the high impact and high vibration use environment, etc., and achieve high output peak power. , narrow pulse width, high integration effect

Active Publication Date: 2021-11-12
BEIJING RES INST OF TELEMETRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This invention is to solve the problem that the existing laser has poor adaptability to the mechanical environment and is difficult to meet the high impact and high vibration use environment, and provides a high-vibration-resistant kilohertz small The volume of the laser is reduced by setting the laser oscillation module on the upper layer of the pump coupling module; the compressed pump light is changed into elliptically polarized light to suppress the thermally induced birefringence depolarization effect of the isotropic crystal; the laser oscillation The module is a self-consistent laser oscillation cavity, which has self-consistent ability in x and y directions at the same time, has a large anti-vibration tolerance, and has a large angle compensation range (≥5°); the thermal control module is set for thermal conduction control temperature

Method used

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Examples

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Effect test

Embodiment 1

[0069] A high-vibration-resistant kilohertz miniaturized laser, including a pump coupling module 1 and a laser oscillation module 2 arranged on the upper layer of the pump coupling module 1;

[0070] The pump coupling module 1 is used to generate and compress the pump light, change the polarization form and then converge the output. The laser oscillation module 2 is used to receive the pump light output by the pump coupling module 1 and oscillate the pump light to output a laser beam.

Embodiment 2

[0072] like Figure 1-2 As shown, a high-vibration-resistant kilohertz miniaturized laser includes a pump coupling module 1, a laser oscillation module 2 arranged on the upper layer of the pump coupling module 1, and a thermal control module 3 for temperature control;

[0073] The pump coupling module 1 is used to generate and compress the pump light, change the polarization form and then converge the output, and the laser oscillation module 2 is used to receive the pump light output by the pump coupling module 1 and oscillate the pump light to output a laser beam;

[0074] The pump coupling module 1 includes a laser diode stack 11, a waveguide shaping device 12, a cylindrical mirror 13, a second quarter-wave plate 14, a convex lens 15, a Dove prism 16 and a second 45° optically connected sequentially. dichroic mirror 17,

[0075] The second 45 ° dichroic mirror 17 and the output optical path of Dove prism 16 are at an angle of 45 °, the first 45 ° dichroic mirror 24 is arran...

Embodiment 3

[0101] like Figure 1-2 As shown, a high-vibration-resistant kilohertz miniaturized laser is used in lidar and laser guidance systems. The laser is divided into upper and lower layers, such as figure 1 and figure 2 As shown, the device specifically includes the following components: pump coupling module 1 (including 11, 12, 13, 14, 15, 16, 17), laser oscillation module 2 (including 21, 22, 23, 24, 25, 26, 27, 28) and temperature control module 3 (including 31 and 32);

[0102] The pump coupling module 1 consists of a laser diode stack 11, a waveguide shaping device 12, a cylindrical mirror 13, a second quarter-wave plate 14, a convex lens 15, a Dove prism 16 and a second 45° dichroic mirror 17 composition;

[0103] The pump light emitted by the laser diode stack 11 is compressed by the fast axis of the waveguide shaping device 12, then compressed by the slow axis of the cylindrical mirror 13, and the compressed pump light becomes elliptically polarized by the second quarte...

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Abstract

The invention provides a high-vibration-resistance kilohertz miniaturized laser, which comprises a pumping coupling module and a laser oscillation module arranged on the upper layer of the pumping coupling module, and is characterized in that the pumping coupling module comprises a laser diode stack, a waveguide shaping device, a cylindrical mirror, a second quarter-wave plate, a convex lens, a Dove prism and a second 45-degree dichroscope; the laser oscillation module comprises a Porro prism, a compensation wave plate, a laser crystal, a first 45-degree dichroscope, a 45-degree polarization plate beam splitter, a first quarter-wave plate, an electro-optical crystal and an output mirror. The laser oscillation module is arranged on the upper layer of the pumping coupling module, so that the size of the laser is reduced; the compressed pump light is changed into elliptically polarized light to inhibit the thermally induced birefringence depolarization effect of isotropic crystals; the laser oscillation module is a self-consistent laser oscillation cavity, has self-adaptation capacity in the x direction and the y direction at the same time, has large anti-vibration tolerance and meanwhile has a large angle compensation range. And a thermal control module is arranged for heat conduction temperature control.

Description

technical field [0001] The invention relates to the technical field of basic electrical components, in particular to a high-vibration-resistant kilohertz miniaturized laser. Background technique [0002] Due to the characteristics of high beam quality, high repetition frequency, high peak power, narrow pulse width, and long life, laser diode (LD) end-pumped lasers have always been the research focus and hotspot in the field of solid-state lasers, and are widely used in atmospheric lidar , ocean detection lidar, laser guidance and other fields. With the development of application requirements, lasers with high beam quality (near the diffraction limit) and capable of outputting high repetition frequency lasers are gradually replacing traditional low repetition frequency and high energy lasers, and lasers that achieve such indicators are mainly end-pumped At the same time, the requirements for miniaturization and high mechanical environment adaptability are put forward for thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0941H01S3/00H01S3/04H01S3/042H01S3/10
CPCH01S3/09415H01S3/0057H01S3/10061H01S3/042H01S3/0405
Inventor 李祚涵赵一鸣潘超李之通王丽东刘宇哲庞庆生边吉李菁文韩晓爽
Owner BEIJING RES INST OF TELEMETRY
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