Diagnosis device and diagnosis method for multi-beam ultra-short pulse time synchronization and phase synchronization

Abstract

The invention provides a diagnosis device and a diagnosis method for multi-beam ultra-short pulse time synchronization and phase synchronization. The diagnosis device consists of a first reflecting mirror, a second reflecting mirror, a phase delayer, a time delayer, a lens, a CCD, a concave cylindrical mirror, a self-coherent signal generator, a phototube, an optical filter and a guide rail, wherein the sequential concave cylindrical mirror, the self-coherent signal generator, the phototube and the optical filter form a self-coherent detection module, the CCD is a phase detection module, and the self-coherent detection module and the phase detection module are fixed on a flat plate in a paratactic mode. The diagnosis device and the diagnosis method can achieve a time synchronization and phase synchronization diagnosis function during multi-beam petawatt laser synthesis and have important guiding and monitoring effects on high-energy petawatt laser output.

Description

technical field [0001] The invention relates to the coherent synthesis of multi-beam ultrashort pulses, in particular to a time-synchronous and phase-synchronous diagnosis device and method for multi-beam ultrashort pulses. Background technique [0002] In some important applications of ultrashort laser pulses, such as physical experiments on the interaction between ultrashort laser pulses and matter, and fast ignition experiments in inertial confinement fusion, the output power of a single laser has a limit and cannot meet the experimental requirements. The coherent combination of ultrashort pulses in the far field is an effective way to obtain high-energy and ultra-high power density focal spots. In order to obtain a focal spot with regular shape and high energy concentration, it is required that the beams meet the time synchronization and phase synchronization during the coherent combination process. [0003] In 2009, K.L.Baker et al. built an interference adaptive optic...

AI Technical Summary

Problems solved by technology

[0004] At this stage, most of the laser coherent combination of high power and ultrashort pulses is still in the stage of theoretical exploration

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