Measuring Spatial Chirp and Pulse-Front Tilt in Ultrashort Pulses Using Single-Shot FROG

Abstract

Because their generation involves considerable spatio-temporal manipulations, ultrashort laser pulses commonly suffer from spatio-temporal distortions. The most common such distortions are spatial chirp and pulse-front tilt. Devices that use dispersive elements such as prisms and diffraction gratings introduce spatial chirp and pulse-front tilt (fig.1), only-in principle-to remove it afterwards. Unfortunately, even slight misalignments leave residual distortions in the output pulse. Since ultrashort pulses are very broadband, these distortions are usually noticeable and problematic.KeywordsUltrashort PulsePulse CompressorUltrashort Laser PulseAngular DispersionUltrashort Optical PulseThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.