A pulsed light source system and method for generating soliton burst mode

Abstract

The invention discloses a pulse light source system and method for generating soliton burst mode, in order to solve the problem that it is difficult for existing fiber lasers to directly output burst mode pulses; the system includes a pulse fiber laser, a polarization controller, a circulator, a coupler, a phase Modulator, microwave source, fiber amplifier and ordinary single-mode fiber; the mode-locked pulse output by the pulsed fiber laser passes through the polarization controller and circulator in turn, and then enters the coupler; the microwave source is connected to the phase modulator, and the frequency of the output signal of the microwave source is continuous Adjustable; the coupler divides the mode-locked pulse into two parts of the optical pulse; the two parts of the optical pulse are transmitted in opposite directions in the closed loop formed by the sequential connection of the coupler, phase modulator, ordinary single-mode fiber and fiber amplifier to obtain different phase shifts Quantity; finally, the coherent superposition in the coupler causes the self-amplitude modulation effect to generate the laser pulse in the burst mode; the invention realizes the continuous adjustment of the repetition frequency of the internal sub-pulse of the laser pulse in the burst mode.

Description

technical field [0001] The invention belongs to the field of laser technology, and in particular relates to the design of a pulse light source system and method for generating a soliton burst mode. Background technique [0002] Pulsed fiber lasers are widely used in basic scientific research, high-speed optical communications, micromachining, ultrafast laser spectroscopy, and precision metrology because of their extremely narrow pulse width, high peak power, and high energy. [0003] In terms of material processing, the researchers proposed to use laser pulses operating in soliton burst mode to reduce the heat dissipation rate of materials, thereby improving ablation efficiency. The burst mode refers to a cluster of soliton pulses whose repetition frequency is on the order of MHz, and the repetition frequency of its internal sub-pulses is on the order of GHz. Due to the higher peak power and lower average power of burst-mode pulses, their ablation properties are superior to...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that it is difficult to directly output burst mode pulses in existing fiber lasers, and propose a pulse light source system and method for generating soliton burst modes

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