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A laser device with continuously adjustable output coupling ratio

A laser device and output coupling technology, applied in lasers, laser components, phonon exciters, etc., can solve the problem of difficult to achieve gain and loss control, high-power 2μm laser resonator output coupling rate cannot be adjusted, and difficult to achieve high-power polarization Laser operation and other issues, to achieve the effect of continuous output coupling rate and high power

Active Publication Date: 2022-06-24
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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Problems solved by technology

[0003] 1. The high-power 2μm laser based on Tm:YAG crystal is free-running, and the researchers believe that it is difficult to realize high-power (watt-level) polarized laser operation in this medium
[0004] 2. The output coupling rate of the high-power 2μm laser resonator based on Tm:YAG crystal is fixed and cannot be adjusted, and it is difficult to achieve gain and loss control

Method used

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  • A laser device with continuously adjustable output coupling ratio
  • A laser device with continuously adjustable output coupling ratio

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Embodiment 1

[0040] figure 2 This embodiment 1 provides a continuously adjustable output coupling rate laser device. It can continuously output the coupling rate, realize the matching control of the gain loss of p-light and s-light in the cavity, and obtain high-power (greater than watt-level) polarization laser operation.

[0041] A continuously adjustable output coupling rate laser device in this embodiment includes a first high-reflection mirror 2-1, a first laser gain module 1, an optical rotation crystal 5, a second laser gain module 1, a first laser gain module 1, a second laser gain module 1, Phase modulator 3, polarizer 4 and second high-reflection mirror 2-2;

[0042] In this embodiment, the side of the first high-reflection mirror 2-1 facing the first laser gain module 1 is coated with a film with a high reflectivity of >90% for the p-light of the preset wavelength and the s-light of the preset wavelength ; The preset wavelength laser is a 2μm band laser, for example, the wave...

Embodiment 2

[0049] see figure 2 As shown, any one of the two laser gain modules 1 can be used for phase modulation for the other laser gain module 1, and can be adjusted through multiple rounds to improve the output coupling accuracy.

[0050] figure 2 This embodiment 2 provides a continuously adjustable output coupling rate laser device. It can continuously output the coupling rate, realize the matching control of the gain loss in the cavity, and obtain high-power (greater than watt-level) polarized laser operation.

[0051] A continuously adjustable output coupling rate laser device in this embodiment includes a first high-reflection mirror 2-1, a first laser gain module 1, an optical rotation crystal 5, a second laser gain module 1, a first laser gain module 1, a second laser gain module 1, Phase modulator 3, polarizer 4 and second high-reflection mirror 2-2;

[0052] In this embodiment, the side of the first high-reflection mirror 2-1 facing the first laser gain module 1 is coate...

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Abstract

The invention provides a laser device with continuously adjustable output coupling ratio, which comprises a first high reflection mirror, at least two laser gain modules, a phase modulator, a polarizer and a second high reflection mirror which are optically coaxially placed in sequence. Through at least one laser gain module and the phase modulator, the phase adjustment of the gain laser can be realized, and then the output coupling rate can be continuously adjusted to realize the matching control of the gain loss of p-light and s-light in the cavity, and obtain high power (greater than watt level) ) polarized laser operation.

Description

technical field [0001] The invention relates to the field of high-power solid-state lasers, in particular to a laser device with a continuously adjustable output coupling rate. Background technique [0002] The 2μm laser band is an eye-safe band and has a wide range of applications in weather monitoring, laser ranging, lidar, remote sensing, medical and life sciences, etc. NASA, US Air Force Laboratory, Northrop Grumman, Stanford University, Harvard Researchers from universities, Cambridge University, the Russian Academy of Sciences and ESA have all carried out technical research on this. With the advantages of high hardness, high thermal conductivity, excellent mechanical properties, thermal properties and optical properties, Tm:YAG crystal is one of the crystals with the most development potential for high-power 2μm laser. The U.S. Air Force Laboratory, Northrop Grumman, Stanford University, Harvard University, Cambridge University, the Russian Academy of Sciences, etc., ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/08H01S3/10H01S3/106H01S3/16
CPCH01S3/08054H01S3/10053H01S3/106H01S3/1616H01S3/1643
Inventor 申玉宗楠彭钦军陈中正薄勇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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