A laser shaping pulse acquisition device and acquisition method

A laser shaping and acquiring device technology, applied in the laser, laser parts, structure/shape of the active medium, etc., can solve the problems of low laser shaping pulse contrast, insufficient shaping accuracy, contrast and signal-to-noise ratio, etc. It is beneficial to the integrated installation and debugging, the maintenance of the device, and the effect of improving the shaping accuracy.
CN106207737BActive Publication Date: 2021-08-31LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Publication Date
2021-08-31

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Abstract

The invention relates to a laser shaping pulse acquisition device and acquisition method, belonging to the technical field of laser equipment. The acquisition device includes a seed source, a first optical modulator, at least one The amplifier, at least one acousto-optic switch, and the second optical modulator also include an arbitrary waveform generator connected to the first optical modulator and the second optical modulator through radio frequency lines, and the present invention adopts electro-optical modulation technology to cascade two-stage optical In the modulator mode, the time window of the optical modulator is precisely regulated by the electrical pulse generated by the arbitrary waveform generator. At the same time, the amplifier and the acousto-optic switch are used together to control the spontaneous emission noise generated by the amplifier based on the particle number inversion. Preliminary filtering, combined with the use of multi-stage amplifiers to reasonably control the energy flow distribution, significantly improves the shaping accuracy, contrast and signal-to-noise ratio of the output laser shaping pulse.
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Description

technical field

[0001] The invention belongs to the technical field of laser equipment, and in particular relates to a laser shaping pulse acquisition device and acquisition method. Background technique

[0002] In a large-scale high-power laser device, the precise shaping of the continuous laser signal output by the laser oscillation seed source is an essential link. By finely adjusting the shape of the laser signal, it can meet the research needs of different fields such as high-density plasma physics, strong field physics, and "fast ignition". Among them, the contrast of the laser shaping pulse is a very important parameter, especially in During the interaction between the ultra-intense laser signal and the target substance, the leading edge of the laser shaping pulse first irradiates the target substance and generates a pre-plasma, which affects the specific experimental effect. In addition, since the laser shaping pulse needs to continue to be transmitted and amplified...

Claims

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