A laser beam pulse timing synthesis device based on diffraction grating

Abstract

The invention relates to the field of the laser technology, and provides a laser beam pulse time sequence synthesizer based on diffraction gratings. The laser beam pulse time sequence synthesizer based on the diffraction gratings comprises a plurality of pulse laser sets and the gratings corresponding to the pulse laser sets, wherein when one grating moves to the work position of the corresponding pulse laser set, a synchronous control device sends an instruction to the corresponding pulse laser set and triggers the pulse laser set to output pulse laser, so that the pulse laser enters a preset main optical path under the diffraction action of the grating, and moreover, the grating does not prevent pulse laser output by other pulse laser sets from entering the main optical path when not in the work positions of the pulse. The laser beam pulse time sequence synthesizer based on the diffraction gratings integrates the spectrum synthesis technology and the mechanical time sequence synthesis technology, increases the number of synthesis paths of pulse laser and keeps good light beam quality on the premise of not reducing sub-laser wavelength intervals or the number of the diffraction gratings.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a diffraction grating-based laser beam pulse timing synthesis device. Background technique [0002] Generally speaking, as the output power of a single laser increases, its beam quality will decrease nonlinearly. Therefore, combining multiple laser beams into one beam is an important method to obtain high-power and high-beam quality lasers. The current laser beam synthesis technology mainly includes: direct synthesis technology, coherent synthesis technology, polarization synthesis technology, spectral synthesis technology, pulse timing synthesis technology, etc. [0003] The direct synthesis technology is to superimpose multiple sub-lasers side by side in sequence, or realize the beam synthesis of multiple sub-lasers by means of beam shaping and transformation. It has the advantages of simple principle and high stability. However, the beam quality of the synthesized laser will ...

AI Technical Summary

Problems solved by technology

Each synthesis module in the optical path of this scheme can only add one synthesis sub-laser to synthesize N sub-lasers. The system needs N-1 synthesis motors and rotating mirrors. Therefore, as the number of synthesis sub-lasers increases, the complexity of the system will increase. And the requirements for synchronous control accuracy also increase

[0006] To sum up, each laser synthesis technology has its unique advantages, but each laser synthesis technology is limited in different degrees and aspects in achieving high power and high beam quality laser synthesis

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