公开(公告)号：US20230058188A1

公开(公告)日：2023-02-23

申请号：US17276825

申请日：2021-01-13

Applicant: XI'AN UNIVERSITY OF TECHNOLOGY

Inventor： Wei SHI ,  Lei HOU ,  Cheng MA ,  Chengang DONG ,  Lei YANG ,  Jiaguang HAN ,  Yanfeng LI ,  Chunmei OUYANG ,  Jianqiang GU ,  Liguo ZHU ,  Zhaohui ZHAI ,  Lianghui DU ,  Yi ZOU

IPC: G01N21/3581 ,  G01N21/3577 ,  G01N21/39 ,  G01N33/487

Abstract: Disclosed is a transient-state THz spectrometer applied to cells and biological macromolecules, including a femtosecond laser amplifier. A femtosecond laser output by the femtosecond laser amplifier is divided into two beams of pump light and probe light after passing through a beam splitter of which a transmission-reflection ratio is 7:3, the pump light is focused to irradiate a gap between electrodes of a nonlinear photoconductive antenna and emit a terahertz wave after successively passing through a half wave plate, a silver-plated reflector and a first lens, the terahertz wave forms a terahertz wave collineation after successively passing through a second lens, a slab waveguide, a third lens and an ITO film, the terahertz wave collineation and the probe light form a probe light collineation of wavefront tilt which is perpendicularly incident on a ZnTe crystal and detected and recorded by using a CCD camera.