Single-frequency pulsed laser with spectral linewidth self-compression based on pre-compensation of pulse shape
By pre-compensating the pulse waveform of a single-frequency pulse seed source and using frequency chirp modulation to achieve spectral linewidth self-compression, the problem of nonlinear broadening of spectral linewidth under high peak power is solved, and a simplified laser system and dynamic spectral linewidth control are realized.
CN116404508BActive Publication Date: 2026-05-26TIANJIN UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN UNIV
- Filing Date
- 2023-05-16
- Publication Date
- 2026-05-26
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Figure CN116404508B_ABST
Abstract
This invention discloses a single-frequency pulsed laser with spectral linewidth self-compression based on pulse waveform pre-compensation. The laser comprises a pump source, a pump coupling device, an active fiber, and an output collimator forming a fiber amplifier to amplify the power of a single-frequency pulsed laser output from a single-frequency pulsed seed source with pulse waveform editing capabilities. An isolator protects the single-frequency pulsed seed source with pulse waveform editing capabilities. The laser employs spectral linewidth self-compression based on pulse waveform pre-compensation to optimize the spectral characteristics of the pulsed laser and suppress linewidth broadening during amplification. This laser achieves high peak power and near-Fourier transform-limited linewidth single-frequency pulsed fiber laser output without adding additional laser devices. Furthermore, this technology allows for linewidth tuning through pulse waveform manipulation.
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