公开(公告)号：US20200319032A1

公开(公告)日：2020-10-08

申请号：US16304135

申请日：2017-06-06

Applicant: Shenzhen University

Inventor： Shixiang XU ,  Shuiqin ZHENG ,  Yi CAI ,  Qinggang LIN ,  Huangcheng SHANGGUAN ,  Junmin LIU

IPC: G01J3/45 ,  G01J3/02 ,  G01J3/14 ,  G01J9/02

Abstract: The present application provides a spectral phase interference device and system for addressing the problem of low stability and compactness with prior art spectral phase interference devices. In the device or system provided in the present application, the optical element for generating the pulse pair to be measured consists of only a birefringent crystal and the adjustment of two-step phase shift is also completed by only a broadband quarter-wave plate. Therefore, wide application of optical elements such as pulse stretchers, retarders, optical splitters and mirrors as in prior art devices is avoided, thereby significantly simplifying the overall device's structure and resulting in enhanced stability and compactness at the same time.