Semiconductor laser pumped folding complex cavity sum-frequency laser

A laser pumping and folding technology, applied in the laser field, can solve the problems of uncontrollable optical gains of two fundamental frequencies, large phase difference, and low sum-frequency efficiency, and achieve increased density, high pumping efficiency, and increased utilization Effect

Inactive Publication Date: 2006-02-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The main problem of the sum-frequency laser is that the two laser transition spectral lines selected by the same laser gain medium generally have very different emission surfaces, and the use of an output coupling mirror cannot control the gain of the two fundamental frequency lights in the sum-frequency process. , and frequency efficiency is low

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  • Semiconductor laser pumped folding complex cavity sum-frequency laser
  • Semiconductor laser pumped folding complex cavity sum-frequency laser

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Embodiment Construction

[0013] The invention according to figure 2 The structure shown is implemented, wherein the laser pump light source 7 adopts a semiconductor laser array with a wavelength of 808nm, the optical coupling system 8 adopts an optical fiber with an optical core of 400 μm, and the reflective cavity 9 adopts K9 optical glass with a diameter of φ6mm and a radius of curvature R=200mm. Anti-reflection film system for 808nm prepared on both sides, transmittance > 90%, high reflectivity film system for wavelength 1342nm and 1064nm prepared on concave surface, among which reflectivity for wavelength 1342nm > 99.9%, reflectivity for wavelength 1064nm > 99.5 %; Laser gain medium 10 adopts neodymium-doped yttrium vanadate (Nd.YVO4), and the light-transmitting surfaces at both ends prepare anti-reflection coatings for wavelengths 1342nm and 1064nm, and the transmittance>99%; Output coupling mirror 11 adopts K9 optical glass , diameter φ6mm, radius of curvature R=50mm, anti-reflection film syste...

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Abstract

The semiconductor laser pumping collapsible complex cavity harmonious-frequency laser belongs to laser technique field, wherein, the technical scheme comprises, arranging optical couple system, reflection cavity mirror, laser gain medium and output couple mirror from left to right on laser beam transmission direction; arranging output couple mirror, harmonious-frequency crystal, and two reflection cavity mirrors from right to left on branch light path originated from output couple mirror; there are two collapsible complex laser cavity contained with laser gain medium, output couple mirror and harmonious-frequency crystal; there are two fundamental frequency lights oscillating when laser running. Thereby, the reasonable design can make the fundamental frequency light and crystal optimal crossover.

Description

technical field [0001] The invention belongs to the field of laser technology and relates to a semiconductor laser pumped solid-state laser with a novel resonant cavity structure and a sum-frequency output. technical background [0002] Semiconductor lasers or semiconductor laser arrays are used as pump light sources, focused from the end face, coupled in close proximity or optical fiber into the laser gain medium, which can achieve a good match with the fundamental frequency optical mode excited in the cavity. Lasers with other wavelengths are obtained through nonlinear optical mixing effects such as intracavity frequency doubling, sum frequency, and difference frequency. Compared with traditional lamp-pumped lasers, semiconductor laser-pumped solid-state lasers have high conversion efficiency and good beam quality. At present, the main application of semiconductor laser pumped intracavity frequency mixing laser is intracavity frequency doubled laser, and this technology h...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/0941H01S3/05
Inventor 吕彦飞檀慧明
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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