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A high-efficiency mid-to-far infrared laser device

A laser device and far-infrared technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of multiple physical processes and low efficiency of mid- and far-infrared lasers, and achieve the goal of improving efficiency, improving electro-optical efficiency and reliability Effect

Active Publication Date: 2022-06-24
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many physical processes, resulting in low efficiency in obtaining mid- and far-infrared lasers.

Method used

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  • A high-efficiency mid-to-far infrared laser device
  • A high-efficiency mid-to-far infrared laser device
  • A high-efficiency mid-to-far infrared laser device

Examples

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no. 1 example

[0024] The high-efficiency mid- and far-infrared laser device provided by the embodiment of the present invention is as follows: figure 1 As shown, it includes a high-power polarized laser 1, a beam shaping module 2, an input mirror 3, a mid-infrared frequency conversion crystal 4, and an output mirror 5 placed in sequence along the optical path direction; wherein, the beam shaping module 2, the input mirror 3, the mid-infrared The frequency conversion crystal 4 and the output mirror 5 are on the optical path of the fundamental frequency laser output from the high-power polarized laser 1 .

[0025] The high-power polarized laser 1 generates a high-power fundamental frequency laser by pumping a Tm:YAG crystal, and the fundamental frequency laser is a p-polarized laser or an s-polarized laser; the beam shaping module 2 is used to generate the high-power polarized laser 1 The fundamental frequency laser is shaped; the input mirror 3 is coated with a film with high transmittance f...

no. 2 example

[0038] The high-efficiency mid-far-infrared laser device of the present invention, except that the high-power polarized laser 1, the beam shaping module 2, the laser input mirror 3, the mid-infrared frequency conversion crystal 4 and the laser output mirror 5 in the first embodiment are included, such as: Figure 5 As shown, an isolation module 6 is further included, and the isolation module 6 is an isolator, located before the laser output mirror, for preventing light from returning to the high-power polarized laser 1, so as to avoid interference.

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Abstract

The invention provides a high-efficiency mid-to-far infrared laser device, comprising: a high-power polarized laser arranged in sequence, a beam shaping module, an input mirror, a mid-infrared frequency conversion crystal, and an output mirror; Film with high reflectivity and high reflectivity for the frequency conversion laser of the target wavelength; the output mirror is coated with a film with high reflectivity for the fundamental frequency laser and a preset transmittance for the frequency conversion laser of the target wavelength; the polarized laser output by the high-power polarized laser passes through the beam After the shaping module is shaped, it is incident on the mid-infrared frequency conversion crystal through the input mirror; the input mirror and the output mirror form an optical parametric laser resonant cavity mirror, and output the target wavelength frequency conversion laser. The device adopts Tm:YAG crystal, realizes high-power polarized laser output by precisely matching the two polarization state laser gain and loss relationships in high-power polarized lasers, directly pumps ZGP crystals, and realizes mid-to-far infrared lasers with high efficiency and high reliability. output.

Description

technical field [0001] The invention relates to a high-power solid-state laser, in particular to a high-efficiency mid- and far-infrared laser device. Background technique [0002] Mid- and far-infrared laser sources have a wide range of application values ​​in the fields of national defense, material processing, medical treatment and detection. At present, the preferred technical solution to obtain a high-efficiency mid-infrared laser source is through ZnGeP 2 (ZGP) crystal frequency conversion generates mid-infrared laser, and the frequency conversion is realized by means of an optical parametric oscillator (OPO). The ZGP crystal can only be pumped with a laser above 2μm. Usually, a 790nm LD is used to pump the Tm:YLF crystal to generate 1.9μm linearly polarized light, and then the Ho:YAG crystal is pumped to generate a 2.07μm laser, and then through the optical parametric frequency conversion process, Generates a mid-infrared laser. However, there are many physical pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/0941H01S3/00H01S3/16
CPCH01S3/0941H01S3/0092H01S3/1616H01S3/1643
Inventor 申玉宗楠彭钦军杨峰薄勇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI