公开(公告)号：US11876335B2

公开(公告)日：2024-01-16

申请号：US17518080

申请日：2021-11-03

Applicant: National Yang Ming Chiao Tung University

Inventor： Shih-Hsuan Chia ,  Lu-Ting Chou ,  Dong-Lin Zhong

IPC: H01S3/10 ,  H01S3/00 ,  H01S3/067 ,  H01S3/102 ,  H01S3/16 ,  H01S3/094 ,  H01S3/0941

CPC classification number: H01S3/0057 ,  H01S3/0092 ,  H01S3/06725 ,  H01S3/06741 ,  H01S3/1024 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/094053 ,  H01S3/1618

Abstract: A method and a system are provided to simultaneously generate blue-shifted and red-shifted femtosecond light sources with tunable spectral peak location and bandwidth, by controlling the input condition (chirp/spectrum) of a fiber-optic nonlinear propagation. The system comprises (A) a seed source, (B) a driving current controller to regulate the spectrum of the seed source, (C) a dispersion controller to control the chirp and pulse width of the seed source, (D) a fiber-optic spectral conversion module to shape and broaden the laser spectrum via fiber-optic nonlinear processes, and (E) a spectral selection module to filter out the required wave packets. With the simultaneous uses of the driving current controller and the dispersion controller, the light sources feature continuously tunable spectral peak with (1) a relatively constant output pulse energy or (2) a tunable spectral bandwidth at a specific peak location.