公开(公告)号：US11692935B2

公开(公告)日：2023-07-04

申请号：US17276825

申请日：2021-01-13

申请人： XI'AN UNIVERSITY OF TECHNOLOGY

发明人： 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分类号： G01N21/3581 ,  G01N21/3577 ,  G01N21/39 ,  G01N33/487 ,  G01N21/17

CPC分类号： G01N21/3581 ,  G01N21/3577 ,  G01N21/39 ,  G01N33/48721 ,  G01N2021/177 ,  G01N2021/396

摘要： 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.