公开(公告)号：US20220181834A1

公开(公告)日：2022-06-09

申请号：US17643057

申请日：2021-12-07

Applicant: Xi'an Institute of Optics and Precision Mechanics of CAS

Inventor： Huabao Cao ,  Yuxi Fu ,  Hushan Wang ,  Pei Huang ,  Xin Liu ,  Hao Yuan

IPC: H01S3/00 ,  H01S3/10

Abstract: The disclosure provides a dispersion management method and apparatus based on non-periodic spectral phase jumps. Precise dispersion is provided by virtue of non-periodic spectral phase jumps, the dispersion can be tuned freely with engineering of the phase jump. A device based on non-periodic spectral phase jump also has a wide working bandwidth and could promote the development of ultrafast optics. The method includes: spatially separating a light pulse with different frequency components, and meanwhile, making the light pulse with the different frequency components propagate in parallel; enabling the light pulse with the different frequency components and propagating in parallel to be incident on a non-periodic phase jump device to obtain non-periodic spectral phase jumps, forming a phase grating effect to obtain two ±1-order diffracted pulses having opposite group delays, and introducing frequency dependent relative delay for the different spectral components in the two diffracted pulses.

公开(公告)号：US11705685B2

公开(公告)日：2023-07-18

申请号：US17643057

申请日：2021-12-07

Applicant: Xi'an Institute of Optics and Precision Mechanics of CAS

Inventor： Huabao Cao ,  Yuxi Fu ,  Hushan Wang ,  Pei Huang ,  Xin Liu ,  Hao Yuan

IPC: H01S3/00 ,  H01S3/10 ,  G02B26/06 ,  G02F1/01

CPC classification number: H01S3/0057 ,  G02B26/06 ,  G02F1/0102 ,  H01S3/10053

Abstract: The disclosure provides a dispersion management method and apparatus based on non-periodic spectral phase jumps. Precise dispersion is provided by virtue of non-periodic spectral phase jumps, the dispersion can be tuned freely with engineering of the phase jump. A device based on non-periodic spectral phase jump also has a wide working bandwidth and could promote the development of ultrafast optics. The method includes: spatially separating a light pulse with different frequency components, and meanwhile, making the light pulse with the different frequency components propagate in parallel; enabling the light pulse with the different frequency components and propagating in parallel to be incident on a non-periodic phase jump device to obtain non-periodic spectral phase jumps, forming a phase grating effect to obtain two ±1-order diffracted pulses having opposite group delays, and introducing frequency dependent relative delay for the different spectral components in the two diffracted pulses.