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Raman laser device for optimizing pumping laser by means of two-stage stimulated Brillouin scattering method

A technology of stimulated Brillouin and Raman lasers, applied in the direction of laser scattering effect, lasers, laser components, etc., can solve the problem of reducing the conversion efficiency of a single wavelength, and achieve the ability to improve beam quality and compress pulse width Effect

Inactive Publication Date: 2015-11-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

Multi-wavelength output can be achieved in the liquid, which reduces the efficiency of single wavelength conversion, and the photolysis of the medium under laser irradiation consumes a large amount of pump light energy

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  • Raman laser device for optimizing pumping laser by means of two-stage stimulated Brillouin scattering method

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Embodiment Construction

[0031] Since stimulated Raman has very high requirements for pulse peak power, which greatly exceeds the capability of ordinary long pulse lasers, it is difficult to use SRS wavelength conversion to achieve wavelength diversification. Therefore, the present invention designs a combination of compressed pulse and stimulated Raman installation. The device first performs stimulated Brillouin scattering on the pump laser to compress the pulse width of the pulsed laser, during which the pulse width of the laser is compressed twice to achieve a significant increase in the peak power of the pulsed laser, and then uses the compressed The pulsed laser is used as the pump light to realize the wavelength conversion of stimulated Raman scattering. This invention is a new type of Raman laser that applies the Brillouin compressed pulse width method to stimulated Raman wavelength conversion for the first time.

[0032] The specific implementation of the Raman laser pumped by the low pulse p...

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Abstract

The invention provides a Raman laser device for optimizing pumping laser by means of a two-stage stimulated Brillouin scattering method. The stimulated Raman has an extremely high requirement for pulse peak power, which is out of capacity of a common long-pulse laser device and diversification of wavelength is difficult to realize by utilizing SRS wavelength conversion so that a device of combination of compressed pulse and stimulated Raman is designed. According to the device, stimulated Brillouin scattering is performed on pumping laser firstly so as to compress pulse width of pulse laser, during which two times of pulse width compression is performed on laser so that great rising of pulse laser peak power is realized. Then the compressed pulse laser is utilized to act as pumping laser to realize stimulated Raman scattering wavelength conversion. The raman laser device for optimizing pumping laser by means of the two-stage stimulated Brillouin scattering method is a novel Raman laser device that the Brillouin pulse width compression method is firstly applied to stimulated Raman wavelength conversion.

Description

technical field [0001] A Raman laser that optimizes the pump laser using a double-stage stimulated Brillouin scattering method, it is designed to solve the problem of some low pulse power lasers because the power is lower than the threshold of stimulated Raman (reaching the GW level) Yes, the stimulated Brillouin gain coefficient of some media is very high (8GW / cm), so the pulse width of the pulsed laser with low peak power can be narrowed by using Brillouin scattering (SRS) through reasonable invention design, so that Increase the pulse peak power of the laser, and finally realize the stimulated Raman transformation. Background technique [0002] Stimulated Raman scattering (SRS) is an efficient means of laser wavelength conversion. There are many kinds of media to realize stimulated Raman wavelength conversion. Although the gain of solid Raman media is very high, its damage threshold is relatively low, especially the thermal damage threshold is very low. Solid-state stim...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/30H01S3/091
Inventor 郭敬为蔡向龙刘金波周灿华金玉奇
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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