An optical fiber four-wave mixing based ultra-short laser pulse shaping device and method

Abstract

The application discloses a kind of based on optical fiber four-wave mixing ultra-short laser pulse shaping device, including ultra-short pulse generation system, spectrum shaping system, four-wave mixing time domain lens system, pulse output and detection system and control module, four-wave mixing time domain lens system includes band-pass filter II, pulse stretcher II, adjustable delay line, amplifier II, optical fiber combiner and four-wave mixer, for pulse frequency time mapping and realizing chirp elimination.Pulse output and detection system includes output filter, pulse compressor, optical fiber coupling and beam splitter II and waveform detection unit, for realizing the sub-pulse compression and output of pulse sequence, and pulse waveform signal is transmitted to control system, control system compares received waveform detection signal with preset signal, and outputs feedback adjustment signal to spectrum shaping system, realizes the closed-loop control of laser pulse shaping.The application is used to output arbitrary shaping pulse sequence of chirp elimination, with the advantage of lower system complexity.

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