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Multi-wavelength tunable laser based on multi-channel optical superlattice

An optical superlattice, multi-channel technology, applied in the field of laser and nonlinear optical frequency conversion, can solve the problems of unutilized and wasted energy, and achieve the effect of improving energy utilization.

Active Publication Date: 2016-03-30
SHANGHAI PRECILASERS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, up to now, there has been no report of multi-channel and simultaneous OPO output of multi-wavelength mid-infrared lasers in superlattice crystal materials.
In addition, the OPO based on PPLT or PPLN crystals needs to be pumped with polarized light, and when using some non-polarized fiber lasers or solid-state lasers such as YAG, half of the energy will not be utilized, resulting in a large degree of waste

Method used

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  • Multi-wavelength tunable laser based on multi-channel optical superlattice
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  • Multi-wavelength tunable laser based on multi-channel optical superlattice

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Embodiment 1

[0032] Embodiment 1 of the present invention such as figure 1 As shown, a multi-wavelength tunable laser based on multi-channel optical superlattice, including pump source laser A, beam shaping system B, polarization beam splitting system C, two polarization conversion and beam focusing systems D1 and D2, beam The collection system E and the multi-channel optical parametric resonator F are characterized in that the pump source laser A is located before the beam shaping system B, the polarization beam splitting system C is located after the beam shaping system B, and the energy from the pump The laser light of Puyuan laser A is divided into two beams, one of which is placed in the polarization conversion and beam focusing system D1, and the other is placed in the polarization conversion and beam focusing system D2 and the beam collection system E, and the output ends of the two beams are both placed In front of the multi-channel optical parametric resonator F, the laser is outp...

Embodiment 2

[0036] Such as figure 2 As shown, it includes a pump source laser A, a beam shaping system B, a polarization beam splitting system C, two polarization conversion and beam focusing systems D1 and D2, a beam collection system E, and a multi-channel optical parametric resonator F, which is characterized in that the pump The pump source laser A is located before the beam shaping system B, and the polarization beam splitting system C is located after the beam shaping system B. After the polarization beam splitting system C, the laser light from the pump source laser A can be divided into two beams. The polarization conversion and beam focusing system D1 is placed, the polarization conversion and beam focusing system D2 and the beam collection system E are placed in the other optical path, the output ends of the two optical paths are placed in front of the multi-channel optical parametric resonant cavity F, and the Resonator F outputs laser light, wherein: beam shaping system B is ...

Embodiment 3

[0041] Embodiment 3 of the present invention such as image 3 As shown, it includes pump source laser A, beam shaping system B, polarization beam splitting system C, three polarization conversion and beam focusing systems D1, D2 and D3, beam collection system E, and multi-channel optical parametric resonator F. The pump source laser A is located before the beam shaping system B, and the polarization beam splitting system C is located after the beam shaping system B. After the polarization beam splitting system C, the laser light from the pump source laser A can be divided into three beams, one of which is The optical path is through the half-wave plate 4, polarizing beam splitter 5, half-wave plate 7, optical isolator 8, 45° mirror 6, and half-wave plate 25 in the polarization beam splitting system C , polarizing beam splitter 26 and 45° reflector 27 form, the second path optical path is through half-wave plate 4, polarizing beam splitter 5, half-wave plate 7, optical isolator...

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Abstract

A multi-channel optical super crystal lattice-based multi-wavelength tunable laser belongs to the technical field of non-linear laser and comprises a pumping source laser, a light beam rectifying system and the like; according to the laser, the light polarization emitted from a pumping source is subjected to splitting into multiple beams of polarized light; after being subjected to converting and focusing, the multiple beams of polarized light subjected to splitting jointly enter a multi-channel light parameter resonance cavity to generate multi-wavelength tunable medium infrared coherent light. The energy utilization rate on the pumping light can be effectively improved, the multi-wavelength coherent light can be generated at the same time, the specific number of the wavelengths depends on the light beam number of the polarized light subjected to splitting and the number of channels on an optical super crystal lattice body, the range and the specific number of the wavelengths depend on the periods of the pumping light and the optical super crystal lattice, and the commonly outputted wavelengths can be subjected to temperature tuning at the same time.

Description

technical field [0001] The invention relates to the technical field of laser and nonlinear optical frequency conversion, in particular to a multi-wavelength tunable laser based on a multi-channel optical superlattice. Background technique [0002] The 3-5μm band laser is a window for atmospheric transmission, which has strong penetrating power to fog, smoke, etc., and is less absorbed by gas molecules and scattered by suspended matter when transmitted at sea level. Moreover, studies have shown that many important hydrocarbon gases and other toxic gas molecules (such as CH 4 , C 2 h 4 , CO, NH 3 , NO x , SO x etc.) There is a strong baseband absorption in this band, and its absorption intensity is 2 to 3 orders of magnitude higher than that in the near-infrared band. This base band absorbs the intrinsic spectroscopic properties of the reactive gas and has fingerprint characteristics. And many radars also have strong absorption characteristics in this band, and this ban...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/094H01S3/08H01S3/16
Inventor 宁建张百涛刘善德何京良赵刚吕新杰
Owner SHANGHAI PRECILASERS TECH CO LTD