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Optical parametric oscillator for intracavity mode mismatch compensation

An optical parametric oscillator and mismatch compensation technology, applied in the field of optoelectronics

Active Publication Date: 2014-06-11
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the focal length of the lens introduced in the optical parametric oscillation cavity is shortened, it will help to alleviate the mismatch of the two cavity modes at high power, but it will cause the mismatch of the two cavity modes at low power

Method used

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  • Optical parametric oscillator for intracavity mode mismatch compensation
  • Optical parametric oscillator for intracavity mode mismatch compensation
  • Optical parametric oscillator for intracavity mode mismatch compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: according to image 3 An optical parametric oscillator with cavity mode mismatch compensation is fabricated for the output of 1.5 micron laser.

[0018] Laser crystal 2 uses Nd:YVO 4 ; The nonlinear optical crystal 5 adopts KTP cut according to the non-critical phase matching of θ=90°, φ=0°; the planar dielectric mirror 7 for absorbing idler light adopts a 4mm thick BK7 glass lens. Total anti-cavity mirror 1 is coated with a film system that is highly reflective to 1.06 micron fundamental frequency laser; output cavity mirror 6 is coated with a film system that is highly reflective to 1.06 micron fundamental frequency laser and has a transmittance of 13% for 1.5 micron signal light; composite cavity mirror 4 Coated with a film system with high transmission for 1.06 micron fundamental frequency laser and high reflection for 1.5 micron signal light; planar dielectric mirror for absorbing idler frequency light 7 Coating for 1.5 micron signal light, 3.5 micro...

Embodiment 2

[0020] Embodiment 2: According to Figure 4 An optical parametric oscillator with cavity mode mismatch compensation is fabricated for the output of 1.5 micron laser.

[0021] Laser crystal 2 uses Nd:YVO 4 ; The nonlinear optical crystal 5 adopts KTP cut according to the non-critical phase matching of θ=90°, φ=0°; the planar dielectric mirror 7 for idler light absorption adopts a 6mm thick BK7 glass lens. The full anti-cavity mirror 1 is coated with a film system that is highly reflective to the 1.06 micron fundamental frequency laser; the output cavity mirror 6 is coated with a film system that is highly reflective to the 1.06 micron fundamental frequency laser and has a light transmittance of 13% for the 1.5 micron signal; The side (left side) of the light-absorbing planar dielectric mirror 7 close to the acousto-optic Q switch 3 is coated with a film system that is highly transparent to the 1.06 micron fundamental frequency laser and at the same time highly reflective to th...

Embodiment 3

[0023] Embodiment 3: according to image 3 (or Figure 4 ) to make an optical parametric oscillator with cavity mode mismatch compensation for outputting 1.5 micron laser.

[0024] The difference from Examples 1 and 2 is that the laser crystal 2 uses Nd:YAG or Nd:YAP or Nd:KGW or Nd:GdVO 4 , to fabricate an optical parametric oscillator with cavity mode mismatch compensation.

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Abstract

The invention relates to an optical parametric oscillator for intracavity mode mismatch compensation. A totally reflecting cavity mirror, a laser crystal, an acoustooptical Q switch, a composite cavity mirror, a planar dielectric mirror for absorbing idle light, a nonlinear optical crystal and an output cavity mirror are arranged in an optical path in turn. The optical parametric oscillator is characterized in that: the planar dielectric mirror for absorbing idle light is arranged on the optical path so as to realize the function similar to that of a zoom lens by absorbing the idle light, and is used for compensating mode mismatch for a base frequency laser resonant cavity and an optical parametric oscillator resonant cavity on the nonlinear optical crystal, and the conversion efficiency of the optical parametric oscillator can be effectively improved.

Description

technical field [0001] An optical parametric oscillator with internal cavity mode mismatch compensation of the present invention relates to a laser device and belongs to the field of optoelectronics Background technique [0002] The optical parametric oscillator has the advantage of being tunable, and its tuning range can be from ultraviolet to far infrared, which makes up for the shortcoming of ordinary lasers that can only output one wavelength of laser light. It is an important way and has high application value. Especially in recent years, with the emergence of a batch of new nonlinear optical crystals and the increasing maturity of optical frequency conversion technology, breakthroughs have been made in optical parametric oscillation technology, which is widely used in environmental monitoring, material processing, data communication, photoelectric measurement , laser ranging and laser radar and other fields. [0003] At present, optical parametric oscillators can be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/0941H01S3/16H01S3/30H01S3/08H01S3/109H01S3/06H01S3/10G02F1/35
Inventor 朱海永张戈段延敏黄呈辉魏勇
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI