Novel high-energy single-frequency pulse laser

Abstract

The invention provides a novel high-energy single-frequency pulse laser. The novel high-energy single-frequency pulse laser comprises a seed laser pumping source, a pumping coupling lens group, an annular cavity, a dichroic mirror, a first isolator, an optical fiber amplifier, a second isolator and a secondary amplifier which are connected in sequence. The seed laser pumping source works in a pulse pumping mode and outputs a pulse pumping laser, the pulse pumping laser enters a single non-planar annular cavity through the pumping coupling lens group to obtain single-frequency pulse laser output, and the single-frequency pulse laser is reflected to the isolator after pump light is separated and then enters the optical fiber amplifier to be amplified. And the laser can output the single-frequency pulse laser of hundreds of millifocal orders to joule orders after passing through a multi-stage solid-state amplifier. The pulse seed laser of the pulse pump is adopted, large-energy single-frequency pulse laser output which is simple in structure and high in frequency stability is obtained after multi-stage amplification, and the laser is suitable for multi-platform application, especially a satellite-borne platform and can serve as a detection light source of a satellite-borne hyperspectral laser radar, a satellite-borne wind lidar, a satellite-borne differential absorption radar and the like.

Description

Technical field[0001]The present invention relates to the field of laser, and more particularly to a new type of large energy single-frequency pulse laser.Background technique[0002]The star-loaded high-spectral laser radar, the starry-loaded laser radar and the starry greenhouse gas differential absorption laser radar require the detection of the light source to output large energy single-frequency pulse lasers. Its implementation generally has two types: one is that the seed injection lock is large, and the continuous single-frequency seed laser is injected into the slave laser, and the single-frequency pulse laser output is realized, and the multi-stage amplifier is used to realize a large energy single-frequency pulse laser output; Second, the continuous seed laser chopping is plasticized and enlarged. Injecting lock control circuit complex, Q-switch open time uncertainty introduces a certain frequency jitter to single-frequency pulse lasers; chopping needs additional AOM (sound ...

AI Technical Summary

Problems solved by technology

The injection locking control circuit is complicated, and the uncertainty of the opening time of the Q switch introduces a certain frequency jitter to the single-frequency pulsed laser; the chopper amplification requires the additional use of an AOM (Acousto-Optic Modulator), which increases the complexity of the system. Introduces insertion loss, chopper energy loss, and additional frequency jitter

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