Flake type semiconductor laser pumping alkali metal laser system

Abstract

The invention provides a flake type semiconductor laser pumping alkali metal laser system. The laser system is able to speed up steam medium radiating speed and further lighten the temperature gradient distribution of a steam cavity. The flake type semiconductor laser pumping alkali metal laser system is realized through the following technical scheme: a semiconductor laser light source is narrowed through a pumping light line-width narrowing system, and then coupled by a pumping light beam homogenizing collimating system to enter an alkali metal steam cavity filled with alkali metal medium and buffer gas, so as to match up with the pumping line-width and absorbing line-width of an alkali metal atom; the pumping light beam homogenizing collimating system homogenizes and absorbs the pumping light; a pumping light reflecting system reflects the unabsorbed pumping light for many times to the alkali metal steam cavity; an alkali metal steam temperature control system is closed to a back end face of the alkali metal steam cavity; a planar and large-area temperature control method is applied to speed up the heat transmission in axial direction and reduces the temperature gradient distribution of the steam cavity in cross direction; a laser is oscillated in a laser resonate cavity to output.

Description

technical field [0001] The invention relates to a semiconductor pumped alkali metal vapor laser, in particular to a wafer type semiconductor laser pumped alkali metal vapor laser. Background technique [0002] Diode Pumped Alkali Vapor Laser (DPAL) is a new type of laser device that combines the advantages of solid-state laser and gas laser. It has the characteristics of high quantum efficiency, good beam quality and narrow line width. It has developed rapidly in recent years. New high-efficiency lasers. , It has broad application prospects in laser interference, laser cooling, directional energy transmission, environmental monitoring, material processing and medical magnetic resonance imaging systems. The semiconductor-pumped alkali metal vapor laser DPAL is a typical three-level laser, and its main gain medium is potassium (K), rubidium (Rb) and cesium (Cs) vapor. These three kinds of gain medium atoms have similar energy level structures. such as in image 3 In the ene...

AI Technical Summary

Problems solved by technology

To alleviate the problem of temperature gradient distribution in the alkali metal vapor chamber when DPAL is working

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