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Updated: May 27, 2026
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Vector-dispersion compensation and pulse pedestal cancellation in a femtosecond nonlinear amplification fiber laser
Chen Xie1, Bowen Liu, Hailiang Niu
1Ultrafast Laser Laboratory, College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China.
Abstract:
We report on a femtosecond nonlinear amplification fiber laser system using a vector-dispersion compressor, which consists of a transmission grating pair and multipass cell based Gires-Tournois interferometer mirrors. The mirror is designed with nearly zero group-delay dispersion and large negative third-order dispersion. As a result, the third-order dispersion of the compressor can be adjusted independently to compensate the nonlinear phase shift of amplified pulses to reduce the pulse pedestal. With this scheme, the system outputs 44 fs laser pulses with little wing at 26.6 W output average power and 531 nJ pulse energy, corresponding to 10.8 MW peak power.
