Disc solid laser amplifier

A solid-state laser and amplifier technology, applied in the laser field, can solve the problems of low seed light amplification times and poor beam quality, and achieve the effects of avoiding thermal distortion effects, increasing amplification times, and prolonging the propagation path

Active Publication Date: 2017-05-17
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the prior art, the object of the present invention is to provide a disk solid-state laser amplifier, which aims to amplify the seed light through the combination of disk crystals connected in series and a lens-right-angle lens, thereby solving the current problem. There are technical problems of low seed light amplification times and poor beam quality in the technology

Method used

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  • Disc solid laser amplifier
  • Disc solid laser amplifier
  • Disc solid laser amplifier

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Experimental program
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Effect test

Embodiment 1

[0064] image 3 It is a schematic plan view of the structure of the disk laser amplifier of embodiment 1, including disk crystal A, lens B1, lens B2, right-angle prism C1, and right-angle prism C2. The diameter of all lenses is D, the focal length is f, and the optical axis is Located on the horizontal plane xOy, the reflective or transmissive surfaces of all devices are perpendicular to the horizontal direction; the front of the disc crystal A has an anti-reflection film, and the back has a total reflection film; its back is oppositely provided with a parabolic reflector for semiconductor The pump light output by the laser is reflected to the back of the disc crystal. By selecting the pump module inside the disc crystal or selecting the parameters of the lens, the spot size of the pump light can be made to be the same as that of the seed light. When the active particles inside the disc crystal absorb the pump light, they transition from the ground state to the excited state,...

Embodiment 2

[0069] Figure 6 It is a top view plan view of the structure of the disc laser amplifier in embodiment 2. The structure of all devices is the same as in embodiment 1. The difference is that we replace it with a right-angle mirror at the position of the original output unit M2, and the intersection line of the two reflection planes is parallel to the x-axis. , the reflector translates the light for a distance S in the z direction and reverses the light propagation in reverse and enters the lens C2 again to continue to oscillate and amplify. And according to the theory of light reflection, it is easy to know that after passing through the right-angle mirror R0, if the vertical distance (z direction) of the light spot on the lens B2 increases by S, then after the reflection of the disc, the light spot on the lens B1 is in the z direction Reduced S.

[0070] Figure 7 The schematic diagram of the structure space of the disk laser amplifier shown in Example 2, we can get the spec...

Embodiment 3

[0074] Figure 9 and Figure 10 The schematic diagram of the structure space of the disc laser amplifier of the shown embodiment 3, the change of the embodiment 3 compared with the embodiment 1 is mainly that the symmetry axis of the main section of the rectangular prism C2 coincides with the optical axis (y axis) of the lens B2, that is, the horizontal distance d is 0, but is rotated by a certain angle θ around the y-axis on this basis. In this embodiment, we take it as 90 degrees for simplicity of analysis. (For the convenience of drawing only in Figure 9 The mark that the rectangular prism C2 is rotated by 90 degrees is marked, and the following figures are omitted)

[0075] Similarly, the propagation route of the seed light is: I→C1→B1→A→B2→C2→B2→A→B1→C1→B1→A→B2→C2→O, a total of 3 times through the disc crystal, and the number of times of amplification for 6.

[0076] Figure 11 The sequence paths of the seed light spots hitting the lenses B1, B2, and rectangular pri...

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Abstract

The invention discloses a disc solid laser amplifier, comprising a disc crystal unit, a reflection unit, a right-angle reflector and 2n reflection focusing units. Each reflection focusing unit is composed of a lens and a right-angle prism. A focus of the lens in each reflection focusing unit is overlapped mutually. Two reflection focusing units form a pair. The axes of the lenses are symmetric about a normal of a disc crystal center. The center of the disc crystal unit is located at the overlapped focus of each reflection focusing unit. The reflection unit is located around the reflection focusing units and is used for importing or exporting light. The right-angle reflector is located between the lenses and the right-angle prisms in the reflection focusing units. Included angles between two optical reflection surfaces of the right-angle reflector and the inclined surfaces of the right-angle prisms are 45 degrees. According to the disc solid laser amplifier, seed light is amplified through the serially connected disc crystals and lens-right-angle reflector combinations, so the technical problem that in the prior art, the amplification times of the seed light is low and the beam quality is low is solved.

Description

technical field [0001] The invention belongs to the field of laser technology, and more specifically relates to a disc solid-state laser amplifier. Background technique [0002] The disk solid-state laser amplifier is a new type of solid-state laser amplifier. This device can pass a beam of high-quality seed light through the disk crystal in the state of particle number inversion for many times, so that the output beam has both the seed light High quality, but also able to obtain higher power and energy. The essential difference between a disc solid-state laser amplifier and other laser amplifiers is that its laser working material is a disc crystal. High anti-reflection coating for pump light and incident seed light, the lower surface is coated with high reflection film for pump light and seed light, and packaged on a metal heat sink. Through the efficient cooling of the back of the heat sink, a one-dimensional temperature gradient is realized, which greatly reduces the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10
CPCH01S3/10007H01S3/10023
Inventor 朱广志余金波陈永骞朱晓王海林宋恩茂
Owner HUAZHONG UNIV OF SCI & TECH
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