Spectral Dynamics of Femtosecond Laser Pulse with Time Stretch Spectroscopy

Abstract

Time stretch spectroscopy enables a successive single-shot spectrum measurement over a couple of millisecond time span in real-time. This powerful method can be applied for ultrafast biomedical imaging but also for understanding complex nonlinear novel dynamics in a mode-locked fiber laser. This review introduces the recent results on the transient spectral dynamics of pulse formation in mode-locking and the shot-to-shot spectral fluctuation of supercontinuum generation from a photonic crystal fiber pumped by Yb fiber chirped-pulse amplification system.