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Laser amplification method and solid laser amplifier based on disc crystal

A solid-state laser and laser amplification technology, applied in the laser field, can solve the problems of low amplification times of seed light and poor beam quality, and achieve the effect of avoiding excessive peak power, increasing the amplification times, and increasing the amplification times.

Active Publication Date: 2017-08-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above defects or improvement needs of the prior art, the present invention aims to amplify the seed light by connecting two amplification units sharing a disc crystal in series, thereby solving the problem of low seed light amplification times and poor beam quality in the prior art technical problems, and obtain shaped Gaussian beams or beams with polarization characteristics

Method used

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  • Laser amplification method and solid laser amplifier based on disc crystal
  • Laser amplification method and solid laser amplifier based on disc crystal
  • Laser amplification method and solid laser amplifier based on disc crystal

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Embodiment 1

[0060] Please refer to Figure 4 , in this embodiment, both the first amplifying unit and the second amplifying unit are multi-pass amplifying units. Among them, the first amplification unit of the inner cavity adopts figure 2 As shown in the structure, the second amplification unit of the external cavity adopts figure 1 structure shown. The concave mirror E2 and the convex lens E3 form a collimating beam expansion unit, and the plane mirrors A1, A6 and A7 are auxiliary reflection units.

[0061] In this embodiment, the seed light is reflected by A1, enters the inner cavity and is transmitted to A2, then reflected to the disc crystal D, reflected to A3 through the disc crystal, then to the convex mirror E1, reflected to A4 and then to E1 , the seed light is transmitted to A5, then transmitted to the disc crystal again, reflected to A6 and then reflected by A6 into the collimator beam expander unit, then passed through the concave mirror E2 and convex lens E3 in turn to be ...

Embodiment 2

[0064] Figure 5 It is a schematic diagram of a solid-state laser amplifier with a parabolic mirror-right-angle prism assembly inside and outside the cavity; the inner cavity and the outer cavity both use a parabolic mirror-right-angle prism combination, and both are multi-pass amplification units. Similarly, E2 and E3 form a collimating beam expansion unit, and A8, A9 and A10 are auxiliary reflection units.

[0065] The seed propagation path is similar to the path of the outer cavity in Example 1. The incident light is first reflected into the inner cavity through A8, transmitted to C3, then focused to D, reflected by D and transmitted to C4 in parallel (in the case of the disc crystal method line) out. Next, similar to the outer cavity of Example 1, the light is transmitted to C4 again through B4, and then focused to D, the light is reflected to C3, and then transmitted to C3 again through B3, and then focused to D, transmitted to C4 and transmitted by C4 Reflected out of ...

Embodiment 3

[0068] Figure 6 It is a schematic diagram of a laser amplifier where the inner cavity is a regenerative amplification unit and the outer cavity is a parabolic mirror-right-angle prism assembly; in this embodiment, the inner cavity uses a regenerative amplification unit, and the outer cavity uses a parabolic mirror-right-angle prism assembly, which is actually multi-pass amplification and regenerative amplification The same combination of E2 and E3 constitutes a collimating beam expander unit, and A15 is an auxiliary reflection unit.

[0069] The polarization state of the incident light includes p light (arrow) and s light (center point). After passing through TFP1, only p light passes through. After passing through FR from right to left, the polarization state changes and becomes s light, and then passes through the half-wave plate. The s light turns into p light, and then passes through TFP2 again, and then passes through F2; F3 does not work at this time, the light passes t...

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Abstract

The invention discloses a laser amplification method and a solid laser amplifier based on a disc crystal. Two amplification units share a disc crystal D, and seed light is amplified by the disc crystal D in one amplification unit, and thereafter the collimation and beam expanding of the amplified seed light is carried out, and then the seed light is transmitted to the other amplification unit, and is further amplified by the disc crystal D. The method and the device provided by the invention are advantageous in that the seed light of low energy level is amplified, and thereafter is further amplified after the collimation and beam expanding, and therefore on one hand, overhigh peak power caused by one-time direct amplification is prevented, and instruments and elements are prevented from being damaged, and on the other hand, output light beams tend to be flat, and shaping effect is achieved; light spots of different sizes in the two amplification units are transmitted to the same disc crystal D to acquire gain, and therefore the utilization rate of the gain area of the disc crystal D is greatly improved.

Description

technical field [0001] The invention belongs to the field of laser technology, and more specifically relates to a laser amplification method based on a disk crystal and a solid-state laser amplifier. Background technique [0002] Disc crystal 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 disc crystal in the state of particle number inversion for many times, so that the output beam has both seed light and High quality, high power and energy can be obtained, every time the seed light passes through the disc crystal, it will be amplified twice. The essential difference between a disc crystal 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....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10H01S3/081H01S3/06
CPCH01S3/0604H01S3/081H01S3/0817
Inventor 朱广志余金波董静朱晓王海林宋恩茂
Owner HUAZHONG UNIV OF SCI & TECH
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