High-vibration-resistance kilohertz miniaturized laser

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...

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

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