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Laser device with continuously adjustable output coupling rate

A laser device and output coupling technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problem of difficult to achieve gain loss control, high-power 2μm laser resonator output coupling rate is not adjustable, difficult to achieve high-power polarization Laser operation and other problems, to achieve the effect of high power and continuous output coupling rate

Active Publication Date: 2021-08-27
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Description
  • Claims
  • Application Information

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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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  • Laser device with continuously adjustable output coupling rate
  • Laser device with continuously adjustable output coupling rate

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Embodiment 1

[0040] figure 2 A continuously adjustable laser device with an output coupling ratio provided in Embodiment 1. The output coupling ratio can be continuously output, the matching control of the gain and loss of p-light and s-light in the cavity can be realized, and high-power (greater than watt-level) polarized laser operation can be obtained.

[0041] A continuously adjustable laser device with an output coupling ratio in this embodiment includes a first high reflection mirror 2-1, a first laser gain module 1, an optically active crystal 5, 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 high reflectivity for p-light with a preset wavelength and s-light with a preset wavelength with a reflectivity >90%. ; The preset wavelength laser is a 2 μm band laser, for example, the wavelength c...

Embodiment 2

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

[0050] figure 2 A continuously adjustable laser device with an output coupling ratio provided in Embodiment 2. The output coupling ratio can be continuously output, the matching control of gain loss in the cavity can be realized, and high-power (more than watt-level) polarized laser operation can be obtained.

[0051] A continuously adjustable laser device with an output coupling ratio in this embodiment includes a first high reflection mirror 2-1, a first laser gain module 1, an optically active crystal 5, 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 coated with a ...

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Abstract

The invention provides a laser device with a continuously adjustable output coupling rate. The device comprises a first high-reflectivity mirror, at least two laser gain modules, a phase modulator, a polarizing film and a second high-reflectivity mirror which are sequentially, optically and coaxially arranged. Through the combined action of at least one laser gain module and the phase modulator, the adjustment of the gain laser phase is realized, further the output coupling rate can be continuously adjusted, the matching control of the gain loss of p light and s light in the cavity is realized, and the high-power (greater than watt level) polarization laser operation is obtained.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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