Confocal unsteady cavity gas Raman laser of YAG pump
A Raman laser and unstable cavity technology, applied in the field of intracavity gas Raman lasers, can solve the problems of laser resonator stability affecting Raman laser output effect, few types of intracavity Raman lasers, etc.
Inactive Publication Date: 2014-06-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
At present, the research on Raman lasers using solid Raman media is relatively active, and there are many related Raman laser cavity types, but there are few types of intracavity Raman lasers using gas Raman media.
In addition, the stability of the laser resonator will also affect the Raman laser output effect
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[0011] In the present invention, the curvature radii of the concave mirrors at both ends of the unstable cavity are R1 and R2 respectively, and the cavity length L=(R1+R2) / 2, and all the components in the present invention are placed on the connecting line between the centers of the two cavity mirrors . A spatula mirror coated with a high reflection film for the fundamental frequency laser is placed on the right side of the leftmost concave mirror, a Raman cell with a gas medium is placed on the right side of the scraper mirror, and a fundamental frequency laser is placed on the right side of the Raman cell Diphasic mirror with high transmission and high reflection of Raman laser. The right side of the dichroic mirror is placed with the fundamental frequency laser medium, and the right side of the fundamental frequency laser medium is the right concave mirror. In this invention, the leftmost and rightmost cavity mirrors highly reflect the fundamental frequency laser, forming a...
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The invention relates to a confocal unsteady cavity gas Raman laser of a YAG pump. The confocal unsteady cavity comprises nine parts: a left side concave mirror, a scraper mirror coated with a fundamental frequency laser high-reflective film, a Raman pool, a two-phase color mirror which is highly transmissible to fundamental frequency laser and highly reflective to Raman light, a fundamental frequency laser medium YAG crystal, a fundamental frequency laser pumping source, a fundamental frequency laser Q regulating unit, a right side concave mirror, and a fundamental frequency laser total reflective mirror, wherein the concave mirror at left and right sides are coated with fundamental frequency laser high-reflective films. The unsteady cavity adopts a gas Raman medium, a laser damage threshold is large, Raman laser of high power density and high optical uniformity can be realized. An actual result shows that the cavity type can effectively lower a conversion threshold of the Raman laser, and improve Raman laser conversion efficiency.
Description
technical field [0001] The present invention is an intracavity gas Raman laser for intracavity Raman laser frequency conversion, which is related to the intracavity Raman laser for realizing Raman laser frequency conversion. The laser resonator used in the present invention is a confocal unstable cavity. It can reduce the Raman laser conversion threshold and improve the Raman laser conversion efficiency. Background technique [0002] Raman scattering technology is an important technical means to realize laser wavelength conversion, and the stimulated Raman scattering of Raman medium can realize the change of laser wavelength. According to the material form of Raman medium, it can be divided into solid Raman medium, liquid Raman medium and gas Raman medium. Solid Raman media are generally small in size, high in Raman media concentration, high in gain and conversion, and people have developed a variety of solid Raman media, which are widely used, but the damage threshold of s...
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IPC IPC(8): H01S3/30H01S3/094H01S3/081
Inventor 郭敬为刘金波周冬建周灿华孟庆琨金玉奇
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI