Semiconductor laser pumped alkali metal laser system with V-type pump structure

A laser pumping, alkali metal technology, applied in gas laser parts, lasers, laser parts and other directions, can solve problems such as affecting the electro-optical efficiency of the DPAL system, affecting the output efficiency of the laser, and increasing the transmission loss of the resonator cavity. Stable output, improved overall electro-optical efficiency, small temperature gradient

CN108988108AInactive Publication Date: 2018-12-11SOUTH WEST INST OF TECHN PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-12-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a semiconductor laser-pumped alkali metal laser system with a V-type pumping structure, which comprises a pumping light source, an alkali metal vapor cell, a temperature control system and a laser resonator output mirror. Pumping light is emitted from the pump light source, obliquely incident on the front surface of the alkali metal vapor cell with respect to the axial direction of the alkali metal vapor cell; The temperature control system is arranged close to the rear end face of the alkali metal vapor pool for stabilizing the temperature in the alkali metal vapor pool; The output mirrors of the laser resonator are arranged perpendicular to the axial direction of the alkali metal vapor cell. The output mirrors of the laser resonator and the back end face of the alkali metal vapor cell form the resonator of the laser. The laser is output from the output mirrors of the laser resonator to the outside of the resonator. The invention can realize the natural separation of the pump light and the laser light, avoids the intracavity transmission loss caused by the polarization device, no longer requires the polarization characteristic of the pump light, and can effectively improve the overall electro-optical efficiency of the DPAL system.
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Description

Technical field

[0001] The invention belongs to the field of semiconductor pumped alkali metal vapor lasers, and relates to a semiconductor laser pumped alkali metal laser system with a V-shaped pump structure. Background technique

[0002] Diode Pumped Alkali Vapor Laser (DPAL) is a new type of high-efficiency laser that has developed rapidly in recent years. It has the advantages of both solid-state lasers and chemical lasers. It has the advantages of high quantum efficiency, excellent thermal management performance, and narrow line width. It is expected to achieve high-power and high-beam quality near-infrared laser output. It is used in laser interference, laser weapons, laser cooling, and orientation. Energy transmission, material processing and medical magnetic resonance imaging systems have broad application prospects. DPAL is a typical three-level laser whose main gain medium is potassium (K), rubidium (Rb) and cesium (Cs) vapor. These three gain medium atoms have simil...

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Embodiment Construction

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In order to solve the problem that the pump light and laser are difficult to separate in the end-pumped DPAL, the present invention provides a semiconductor laser pumped alkali metal laser system with a V-shaped pump structure, refer to figure 2 As shown, for ease of description, only parts related to the structural embodiment of the present invention are shown.

[0022] The semiconductor laser pumped alkali metal laser system with a V-shaped pump structure in this embodiment includes: pump light source 1, beam homogenization collimation system 2, alkali metal vapor pool 3, temperature control...