公开(公告)号：US11522334B2

公开(公告)日：2022-12-06

申请号：US16885129

申请日：2020-05-27

Applicant: INSTITUTE OF PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Shaobo Fang ,  Zhiyi Wei ,  Pei Huang ,  Yitan Gao ,  Kun Zhao

IPC: G01J11/00 ,  G02F1/35 ,  G01J9/02 ,  G02B27/10 ,  G02B27/14 ,  H01S3/13 ,  H01S3/123 ,  H01S3/10 ,  H01S3/00 ,  G02B26/06

Abstract: Methods and devices are described for performing an all-phase measurement of an ultra-fast laser pulse having a spectral range of greater than one octave. The ultra-fast laser pulse may be split into a first beam comprising a fundamental light with a wavelength λ0 and a second beam comprising a light with a wavelength 2λ0. The light with the wavelength 2λ0 may be frequency doubled to a light with a wavelength λ0 to generate an interference with the fundamental light. Fourier transform may be performed on an interference spectrum of the interference, and a relative envelope delay (RED) between the fundamental light and the frequency doubled light and a carrier envelope phase (CEP) may be acquired based on a result of the Fourier transform.