Error demodulation coherent beam laser system

Abstract

The invention discloses an error demodulation coherent beam combination laser system. The system comprises a laser beam array, a small diameter reflecting array, a focusing unit, a beam combination far field detecting unit and a sub-beam far field positioning unit, wherein the laser beam array comprises a plurality of sub-beams; the small diameter reflecting array comprises a plurality of small diameter reflecting lenses; the focusing unit comprises a reflecting lens and a focusing lens; the beam combination far field detecting unit comprises a beam splitter, a rotary light selecting plate, a focusing lens and a CCD camera; the sub-beam far field positioning unit comprises a reflecting lens, an array lens, a focusing lens and a CCD camera. The system can realize precision detection of the two-dimensional angle error of each sub-beam in a relevant beam combination laser system and the precision detection of back and forth vibration among sub-beams at the same time, and solves the problem that detection and control are difficult because the quantity of sub-beams and errors are large in the relevant beam combination laser system.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a coherent beam combining laser system, which is mainly applicable to high-energy and high-power laser systems and ultra-short and ultra-strong laser systems. Background technique [0002] High-energy, high-power and ultra-short ultra-intense lasers are a major trend in current international laser technology research. At the same time, the development of laser technology has greatly promoted the research of basic physics, providing an unprecedented platform for human beings to explore the origin of matter, the unknown universe and energy issues. After years of development, an international consensus has been reached: every step of laser intensity increases, the depth of physical research increases by one layer. Leveraging on the development of chirped pulse amplification technology for 30 years, the State Key Laboratory of Strong Field Laser Physics of Shanghai Institute of Optics and Fine...

AI Technical Summary

Problems solved by technology

The system can simultaneously realize the precise detection of the two-dimensional angle error of each sub-beam in the coherent beam-combining laser system and the precise detection of the back-and-forth jitter between sub-beams, which solves the problem of difficult detection and control due to the large number of sub-beams and errors in the coherent beam-combining laser system the puzzle

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