公开(公告)号：US20230335964A1

公开(公告)日：2023-10-19

申请号：US18023753

申请日：2021-08-05

Applicant: Active Fiber Systems GmbH

Inventor： Tino EIDAM ,  Christian GAIDA ,  Steffen HÄDRICH ,  Fabian STUTZKI

IPC: H01S3/00 ,  G02F1/35 ,  G02F1/365

CPC classification number: H01S3/0057 ,  H01S3/0092 ,  G02F1/3503 ,  G02F1/365 ,  H01S2301/08 ,  G02F2201/17

Abstract: The invention relates to an optical system comprising: a laser source which generates pulsed laser radiation consisting of a temporal sequence of laser pulses; and at least one pulse compression device which is located in the beam path and has a non-linear medium, wherein the laser pulses undergo non-linear spectral broadening during propagation through the medium, and a chirp is applied to the laser pulses. The aim of the invention is to provide an optical system which makes it possible to generate non-linearly compressed laser pulses with improved temporal pulse contrast or with improved pulse quality. According to the disclosed approach, a group delay dispersion which varies along the beam path and which compensates at least partially for the chirp is applied to the laser pulses by the pulse compression device.