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High-energy hundred-picosecond laser pulse generation device highly stable in time

A picosecond laser and generation device technology, applied in the field of nonlinear optics, can solve the problems of low laser pulse energy, low amplification efficiency, wide laser pulse spectrum, etc., achieve simple device structure, reduce peak power density, and reduce the risk of damage Effect

Inactive Publication Date: 2014-06-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the laser pulse energy generated by the existing laser pulse generating device is low, the optical structure of the amplification system is complicated, the amplification efficiency is low, the generated laser pulse spectrum is wide, and the stability of the pulse compression method is poor, which is limited in application. The problem is to provide a device for generating high-energy and high-energy hundred picosecond laser pulses with high stability in time

Method used

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  • High-energy hundred-picosecond laser pulse generation device highly stable in time
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  • High-energy hundred-picosecond laser pulse generation device highly stable in time

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specific Embodiment approach 1

[0033] Specific implementation mode 1: the following combination figure 1 To describe this embodiment, the device for generating a high-energy, high-energy, 100-picosecond laser pulse with high stability in time, which includes a laser source 1, a half-wave plate 2, a polarizer 3, and a quarter-wave plate 4 , SBS medium cell 5, pump light parameter measuring device 6 and short pulse output light parameter measuring device 7;

[0034] The laser pulse Pump emitted by the laser source 1 is divided into p-state linearly polarized light and s-state linearly polarized light by the half-wave plate 2 and polarizer 3, and the s-state linearly polarized light reflected by the polarizer 3 is incident on the pump light parameter measuring device 6 , The p-state linearly polarized light transmitted through the polarizer 3 is incident on the quarter wave plate 4, and after being transmitted by the quarter wave plate 4, it becomes circularly polarized light and enters the SBS dielectric cell 5, ...

specific Embodiment approach 2

[0035] Specific implementation manner 2: the following combination figure 1 This embodiment will be described. This embodiment will further explain the first embodiment. By rotating the angle of the half-wave plate 2, the ratio of the p-state linearly polarized light and the s-state linearly polarized light is controlled, that is, the p-state line passing through the polarizer 3 is controlled. Polarized light energy is continuously adjustable.

specific Embodiment approach 3

[0036] Specific implementation manner three: the following combination figure 1 This embodiment will be described. This embodiment will further explain the first embodiment. The pump light parameter measuring device 6 receives the s-state linearly polarized light reflected by the polarizer 3 for recording the parameters of the received laser pulse Pump.

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Abstract

The invention relates to a high-energy hundred-picosecond laser pulse generation device highly stable in time and belongs to the field of nonlinear optics. The high-energy hundred-picosecond laser pulse generation device highly stable in time solves the problems that the laser pulse energy generated by an existing laser pulse generation device is low, the optical structure of an amplification system is complex, the amplification efficiency is low, the spectrum of the generated laser pulse is wide, the pulse compression mode is poor in stability, and the device is limited in application. The high-energy hundred-picosecond laser pulse generation device highly stable in time comprises a laser source, a half-wave plate, a polarizer, a quarter-wave plate, an SBS medium pool, a pump light parameter measurement device and a short pulse output light parameter measurement device. The pump light parameter measurement device comprises a first beam splitting plate, a first energy card meter and a first photoelectric detector. The SBS medium pool is a hollow cylindrical container, and the two ends of the SBS medium pool are sealed by a first window sheet and a second window sheet respectively. The short pulse output light parameter measurement device comprises a second beam splitting plate, a second energy card meter and a second photoelectric detector. The high-energy hundred-picosecond laser pulse generation device highly stable in time is used for generating high-energy pulse lasers and particularly applicable to large-caliber laser pumps.

Description

Technical field [0001] The invention relates to a device for generating high-stability and large-energy 100-picosecond laser pulses, belonging to the field of nonlinear optics. Background technique [0002] Inertial confinement fusion can provide huge energy and will become one of the important ways to effectively solve future energy problems and national defense security issues. Therefore, it will inevitably become a hot spot for experts and scholars from various countries to study. In order to carry out fusion ignition, a variety of ignition schemes have been proposed in recent years, and the most promising one is the "impact ignition" scheme proposed by Betti et al. in 2007. They pointed out that if multiple pulse lasers with a pulse width of 100ps and energy of 100kJ can be generated, impact ignition will be possible. Compared with other ignition solutions, this solution has the lowest overall requirements for the laser driver. However, how to obtain such laser pulses has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/13
Inventor 吕志伟朱学华王雨雷
Owner HARBIN INST OF TECH
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