Optical parametric oscillator capable of generating 2 microns wave band laser

An optical parametric oscillator and laser technology, applied in the field of optoelectronics, can solve the problems of difficult low-temperature cooling control, unstable output, low conversion efficiency, etc.

Inactive Publication Date: 2010-03-24
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

Overcome the shortcomings of the original 2-micron band laser technology, such as high threshold value, difficult

Method used

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  • Optical parametric oscillator capable of generating 2 microns wave band laser
  • Optical parametric oscillator capable of generating 2 microns wave band laser
  • Optical parametric oscillator capable of generating 2 microns wave band laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: according to figure 1 The light path made a Nd:YAlO 3 For the laser crystal, KTiOAsO 4 Optical parametric oscillator for nonlinear crystal, acousto-optic Q-switching output 2.1 micron laser

[0015] The device consists of a full reflection cavity mirror 1 that is highly reflective to 1.34 micron laser and highly transparent to 1 micron band, and an output cavity mirror 5 that is highly reflective to 1.34 micron laser and highly transparent to 1 micron band, and partially transparent to 2.1 micron laser. Form a laser resonator. Starting from the total anti-cavity mirror 1, the acousto-optic Q-switching switch 6 is sequentially placed in the laser resonator, and the laser crystal Nd:YAlO 3 2. A composite cavity mirror with high transparency for 1.34 micron and 1 micron band lasers and high reflection for 2.1 micron lasers 3. Non-linear crystal KTiOAsO cut according to the non-critical phase matching of θ=90° and φ=0° 4 4. Using a semiconductor laser arr...

Embodiment 2

[0017] Embodiment 2: according to figure 1 The optical path made a laser crystal using Nd:YAG, KTiOAsO 4 Optical parametric oscillator for nonlinear crystal, acousto-optic Q-switching to output 2.04 micron laser

[0018] The device consists of a full reflection cavity mirror 1 that is highly reflective to 1.32 micron laser and highly transparent to 1 micron band, and an output cavity mirror 5 that is highly reflective to 1.32 micron laser and highly transparent to 1 micron band, and partially transparent to 2.04 micron laser. Form a laser resonator. Starting from the total anti-cavity mirror 1, the acousto-optic Q-switching switch 6 is sequentially placed in the laser resonator, and the laser crystal Nd:YAG2 is a compound cavity mirror 3 that is highly transparent to 1.32 micron and 1 micron band lasers and highly reflective to 2.04 micron lasers , according to θ=90°, φ=0° non-critical phase matching cut nonlinear crystal KTiOAsO 4 4. A semiconductor laser array is used as...

Embodiment 3

[0020] Embodiment 3: according to figure 1 The light path made a Nd:YAlO 3 For laser crystals, KTiOPO 4 Optical parametric oscillator for nonlinear crystal, acousto-optic Q-switching output 2.2 micron laser

[0021] The device consists of a full reflection cavity mirror 1 that is highly reflective to 1.34 micron laser and highly transparent to 1 micron band, and an output cavity mirror 5 that is highly reflective to 1.34 micron laser and highly transparent to 1 micron band, and partially transparent to 2.2 micron laser. Form a laser resonator. Starting from the total anti-cavity mirror 1, the acousto-optic Q-switching switch 6 is sequentially placed in the laser resonator, and the laser crystal Nd:YAlO 3 2. A composite cavity mirror with high transparency for 1.34 micron and 1 micron band lasers and high reflection for 2.2 micron lasers at the same time. 3. Non-linear crystal KTiOPO cut according to the non-critical phase matching of θ=90° and φ=0° 44. Using a semiconduct...

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Abstract

The invention relates to a novel optical parametric oscillator capable of generating 2 microns wave band laser. A pump light source (7) is used for pumping fluorescence generated by a pump laser crystal (2); 1.3 microns wave band oscillation laser can be formed inside a laser resonant cavity formed by a total reflection cavity mirror (1) and an output cavity mirror (5); a Q switch (6) is used formodulating, and the 2 microns wave band laser can be generated by parametric oscillation of a non-linear optical crystal (4); the 2 microns wave band laser is strengthened by oscillation in an opticalparametric oscillation cavity formed by a compound cavity mirror (3) and the output cavity mirror (5); and finally, the 2 microns wave band laser can be output.

Description

technical field [0001] An optical parametric oscillator for generating 2-micron waveband laser of the present invention relates to a laser device and belongs to the field of optoelectronics Background technique [0002] The 2 micron band laser is safe for human eyes, has strong penetrating ability to atmosphere and smog, and covers water molecules and CO 2 The absorption band and other characteristics of the molecule make it widely used in military affairs, laser ranging, laser radar, remote sensing and biomedicine. In addition, the laser in the 2 micron band can also be used as the pumping source of the optical parametric oscillator in the mid-infrared band. [0003] At present, the laser in the 2 micron band is mainly realized by two methods: (1) through Tm-doped and Ho-doped laser crystals (Ho:GdVO 4 , Tm, Ho:YLF, Tm:YAG, etc.) as the working material laser directly produces 2 micron band laser; (2) made of neodymium-doped ion laser crystal 4 f 3 / 2 - 4 I 11 / 2 The 1-...

Claims

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Application Information

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IPC IPC(8): G02F1/35G02F1/355H01S3/109H01S3/00
Inventor 朱海永张戈黄呈辉魏勇黄凌雄
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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