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High-optical-quality laser amplification device

A laser amplification and laser amplifier technology, applied in the field of lasers, can solve problems such as difficulty in ensuring the quality of the output beam, lack of real-time beam monitoring functions, etc., and achieve the effect of ensuring the quality of the beam

Inactive Publication Date: 2016-05-04
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the traditional double-pass laser amplification device, the lack of real-time beam monitoring function makes it difficult to ensure the beam quality of the output beam

Method used

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  • High-optical-quality laser amplification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 2 , figure 2 It is a structural schematic diagram of an embodiment of a dual-pass laser amplifying device in an embodiment of the present invention. Such as figure 2 As shown, the dual-pass laser amplifying device 100 includes a first polarization beam splitter (PBS, Polarization BeamSplitter) 110, a polarizer 120, a Faraday rotator 130, a first half-wave plate 140, a laser amplifier 150, and a second polarization beam splitter prism 160. Mirror 170.

[0036] The first polarizing beamsplitter prism 110 is used to receive the laser light injected by external equipment, and transmit the horizontal linearly polarized light in the laser light, and reflect the vertical linearly polarized light in the laser light so as to be received by the beam monitor, such as by an image sensor (CCD, Charge- coupledDevice) to receive. Specifically, in this embodiment, the vertically linearly polarized light is reflected to the CCD1 at a reflection angle of 45 degrees by t...

Embodiment 2

[0049] When the laser injected by the external device is in the vertical linear polarization state, if the extinction ratio of the first PBS is high, the energy reflected by the first PBS to the CCD1 may be too little, and the CCD1 cannot clearly monitor it. To solve this problem, the embodiments of the present invention also provide the following embodiments.

[0050] see Figure 5 , Figure 5 It is a structural schematic diagram of another embodiment of the dual-pass laser amplifying device in the embodiment of the present invention. Such as Figure 5 As shown, the double-pass laser amplifying device 200 includes a first polarization beam splitter prism 210, a polarizer 220, a Faraday rotator 230, a first half-wave plate 240, a laser amplifier 250, a second polarization beam splitter prism 260, and a mirror 270 .

[0051] The difference between this embodiment and Embodiment 1 is that the dual-pass laser amplification device 200 of this embodiment also includes:

[0052...

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PUM

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Abstract

The embodiment of the invention provides a round-trip laser amplification device and a system thereof. The device comprises a first polarization splitting prism, a polarizing film, a Faraday optical rotator, a first half-wave plate, a laser amplifier, a second polarization splitting prism and a reflector, wherein the first polarization splitting prism is used for allowing the horizontal line polarized light in the laser to be transmitted, and reflecting the perpendicular line polarized light in the laser so as to be received by a light beam monitor; the polarizing film is used for allowing the horizontal line polarized light from the first polarization splitting prism to be transmitted; the Faraday optical rotator is used for rotating the polarization state of the horizontal line polarized light for 45 degrees in a first direction; the half-wave plate is used for rotating the polarization state of the line polarized light for a predetermined included angle in the first direction; the laser amplifier is used for amplifying the energy of the line polarized light; the second polarization splitting prism is used for reflecting the perpendicular line polarized light, and allowing the horizontal line polarized light to be transmitted so as to be received by a light beam monitor; and the reflector is used for reflecting the perpendicular line polarized light along the original path. The round-trip laser amplification device has the light beam real-time monitoring function.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a double-pass laser amplifying device and a system thereof. Background technique [0002] In large and complex lasers, it is necessary to perform double-pass amplification on the laser to extract more energy and obtain higher energy output. This is a double-pass laser amplification device. [0003] Traditional two-pass laser amplification devices such as figure 1 As shown, the injected laser light is horizontal linearly polarized light, which transmits through the polarizer 1 to the laser amplifier 2. After the laser is amplified by the laser amplifier 2, it is output to the Faraday rotator 3, and then rotated 45 degrees clockwise (counterclockwise) by the Faraday rotator 3. , output to the reflector 4, reflected back to the Faraday rotator 3 by the reflector 4, the laser is rotated 45 degrees clockwise (counterclockwise) by the Faraday rotator 3 again to be vertical linearly pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10
CPCH01S3/10015
Inventor 唐熊忻樊仲维邱基斯王昊成
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI