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Red laser, laser frequency conversion device and method for generating red laser

A laser and laser beam technology, applied in the field of lasers, can solve the problem that red lasers cannot achieve high power output, and achieve the effect that is not easily affected by thermal effects

Pending Publication Date: 2022-05-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the technical problem that the red laser has been unable to achieve high power output in the prior art

Method used

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  • Red laser, laser frequency conversion device and method for generating red laser
  • Red laser, laser frequency conversion device and method for generating red laser

Examples

Experimental program
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Effect test

Embodiment 1

[0070] like figure 1 As shown, a high-power red laser includes a lens 1, an oscillation-level Raman cell 2 with coated windows at the left and right ends, a dielectric film concave mirror 3, the reflection wavelength covers 1064 and 1248nm, and the two pieces have a 45-degree angle of 1248nm Reflector 4, second-stage amplified Raman cell with coated window 5, 45-degree angle 1064 transmission 1248nm reflection dichroic mirror 6, laser frequency doubling crystal 7. The 1064nm pump laser beam is focused to both ends by lens 1 1248nm Raman seed light is generated after the rare gas oscillation-grade Raman cells 2 filled with 0.5MP CO2 and 4MP are respectively equipped with coated windows. The 1248nm Raman seed light and the remaining 1064nm pump laser light pass through the dielectric film concave mirror 3 and then pass through two 45° 1064nm and 1248nm mirrors 4 and then enter the second-stage coated window filled with 4MP amplifying Raman cell 5 for amplification, After the am...

Embodiment 2

[0072] like figure 2 As shown, on the basis of Embodiment 1, the present invention also provides a high-power red laser structure capable of multi-stage amplification, specifically including a lens 1, an oscillation-level Raman cell 2 with coated windows at the left and right ends, Dielectric film concave transmission mirror 3, the reflection wavelength covers 1064nm and 1248nm, composed of a 1248nm reflection mirror with a 45-degree angle and a dichroic mirror for 1248nm laser reflection and 1064nm laser transmission 4, the second-stage Raman amplification with a coated window Pool 5, 45-degree angle 1064 transmission 1248nm reflection dichroic mirror 6, laser frequency doubling crystal 7. The 1064nm pump laser beam is focused by lens 1 to two ends with coated windows respectively filled with 0.5MP CO2 and 4MP rare Seed light at 1248nm is generated after gas oscillation grade Raman cell 2. The 1248nm Raman seed light and the remaining 1064nm pump laser light pass through th...

Embodiment 3

[0074] like figure 2 As shown, the present invention also provides another way to realize the red laser. The structure includes a lens 1, an oscillation-level Raman cell 2 with coated windows at the left and right ends, a dielectric film concave transmission mirror 3, and the reflection wavelength covers 1064nm. and 1248nm, composed of a 1248nm reflector at a 45-degree angle and a dichroic mirror for 1248nm laser reflection and 1064nm laser transmission4, the second-stage amplified Raman cell with a coated window 5, 1064nm transmission at a 45-degree angle and 1248nm reflection Dichroic mirror 6, laser frequency doubling crystal 7. The 1064nm pump laser beam is focused by the lens 1 to the rare gas oscillation grade Raman cell 2 filled with 0.5MPCO2 and 4MP with coated windows at both ends, and then produces 1248nm seeds Light. The 1248nm Raman seed light and the remaining 1064nm pump laser light pass through the dielectric film concave transmission mirror 3, then pass throu...

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Abstract

The invention provides a red laser, a laser frequency conversion device and a method for generating red laser. The laser comprises: a pump laser for generating a pump laser beam; the oscillation-level Raman pool is used for converting the pumping laser beam into a first laser beam with Raman seed light and residual pumping laser; the laser reflector group is used for reflecting the laser with the wavelength of 1248 nm to the Raman light amplification structure; the Raman light amplification structure is used for amplifying the laser with the wavelength of 1248 nm, the laser is separated from an emergent light beam of the Raman light amplification structure to generate a second laser beam, and the second laser beam is projected to the frequency doubling crystal; and the frequency doubling crystal is used for realizing a frequency doubling effect on the second laser beam and generating red laser with the wavelength of 624nm. The technical problem that high-power output of red laser cannot be achieved all the time in the prior art is solved.

Description

technical field [0001] The present invention relates to the field of laser technology, in particular, to a red laser, a laser frequency conversion device and a method for generating red laser. Background technique [0002] In recent years, with the continuous development of lasers in many application fields such as transportation, measurement, medical treatment, national defense and industry and agriculture, the development of special laser wavelengths has attracted more and more interest. These special laser wavelengths can be generated by new laser working substances, or by nonlinear optical frequency conversion such as gases or crystalline materials. Among them, red lasers play an important role in national defense fields such as ranging, radar, laser gyro, and photoelectric countermeasures. However, red lasers have been unable to achieve high power output due to immature technology and lack of suitable gain media. [0003] Stimulated Raman scattering technology is an i...

Claims

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Application Information

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IPC IPC(8): H01S3/30H01S3/109
CPCH01S3/305H01S3/109
Inventor 李慧郭敬为刘金波蔡向龙沈陈诚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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