A multi-functional laser device and output method based on a single-block dual 45°-mgo:ln multi-modulation mode

Abstract

The invention relates to the field of a multi-modulation mode multifunctional laser device and an output method based on a monolithic double 45°-MgO:LN. The device includes: front cavity mirror, pump source, laser gain medium, double 45°‑MgO: LN crystal, acousto-optic crystal, first output mirror, second output mirror, first block doped MgO: LN Crystal, the second horizontal back-pressure electro-optic modulator, the first Brewster mirror, the s-light full reflection mirror with electric guide rail, the p-light output mirror, the first optical isolator switch, the electro-optic control device, the acousto-optic modulator , the second optical isolator switch, the p-light total reflection mirror with electric guide rail, the s-light output mirror, the electro-optic control device is connected with the double 45°-MgO: LN crystal, the second horizontal back pressure electro-optic modulator Connected to the first bulk doped MgO:LN crystal. The invention can realize switching among three modulation modes of high repetition frequency acousto-optic Q-switched pulse laser, high-power electro-optic Q-switch pulse laser and electro-optic cavity emptying with narrow pulse width and high peak power, and has high integration and easy operation.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to the field of a multi-modulation mode multi-functional laser device and an output method based on a monolithic double 45°-MgO:LN. Background technique [0002] Solid-state lasers have been widely used in various fields. Among them, acousto-optic Q-switched lasers are widely used in fields such as photoelectric countermeasures and laser ranging due to their high repetition rate and good repeatability; the peak power of electro-optic Q-switched lasers can reach megabytes. Watt level and the pulse width is about ten nanoseconds, so it is widely used in laser welding, laser drilling, laser cutting, laser marking and other fields; compared with electro-optic Q-switched lasers, the pulse width of cavity emptying electro-optic modulation can be The advantages of compression to a few nanoseconds and high stability have also been applied to the above fields; however, the above laser modulat...

AI Technical Summary

Problems solved by technology

In the prior art, the pulse width tuning can also be realized by the stimulated Brillouin scattering (SBS) double-stage phase conjugate mirror, the technical solution disclosed in the "pulse width tunable YAG laser" of the patent number CN95212767.9, the solution Pulse width tuning is realized by moving the distance from the SBS dual-stage phase conjugate mirror. The scheme relies on the reflected amplified light to be emptied from the resonant cavity, so that the requirements for the coating level of the oscillation-level and amplifying-level laser rods and various optical components are required. Higher, otherwise it is easy to cause self-excitation; this scheme relies on 1 / 4 wave plate and polarizing prism to realize laser output. When working at high energy or high power, the laser depolarization of the oscillation stage and the amplification stage will be more serious, so that the amplified A considerable part of the light cannot be poured out of the cavity, which interferes with the oscillation level and destroys the stability of the working pulse

Images