Ghost spintronic THz-emitter-array microscope

Si-Chao Chen; Zheng Feng; Jiang Li; Wei Tan; Liang-Hui Du; Jianwang Cai; Yuncan Ma; Kang He; Haifeng Ding; Zhao-Hui Zhai; Ze-Ren Li; Cheng-Wei Qiu; Xi-Cheng Zhang; Li-Guo Zhu

doi:10.1038/s41377-020-0338-4

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Ghost spintronic THz-emitter-array microscope

Original Articles

- Ghost spintronic THz-emitter-array microscope
- Light: Science & Applications Vol. 9, Issue 4, Pages: 1031-1039(2020)
- Affiliations：
  
  1.Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900 Sichuan, China
  2.Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026 Anhui, China
  3.Microsystem & Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200 Sichuan, China
  4.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
  5.National Laboratory of Solid-State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 Jiangsu, China
  6.Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
  7.The Institute of Optics, University of Rochester, Rochester, NY 14627, USA
- Author bio：
  
  Li-Guo Zhu (zhuliguo@tsinghua.org.cn)
- Funds：
- DOI：10.1038/s41377-020-0338-4
  CLC：
- Published：2020，
  
  Published Online：08 June 2020，
  
  Received：10 March 2020，
  
  Revised：18 May 2020，
  
  Accepted：25 May 2020
- Accepted：
Scan QR Code
Chen, S. C. et al. Ghost spintronic THz-emitter-array microscope. Light: Science & Applications, 9, 1031-1039 (2020).
DOI：

Chen, S. C. et al. Ghost spintronic THz-emitter-array microscope. Light: Science & Applications, 9, 1031-1039 (2020). DOI： 10.1038/s41377-020-0338-4.

摘要

Abstract

Terahertz (THz) waves show great potential in nondestructive testing

biodetection and cancer imaging. Despite recent progress in THz wave near-field probes/apertures enabling raster scanning of an object's surface

an efficient

nonscanning

noninvasive

deep subdiffraction imaging technique remains challenging. Here

we demonstrate THz near-field microscopy using a reconfigurable spintronic THz emitter array (STEA) based on the computational ghost imaging principle. By illuminating an object with the reconfigurable STEA followed by computing the correlation

we can reconstruct an image of the object with deep subdiffraction resolution. By applying an external magnetic field

in-line polarization rotation of the THz wave is realized

making the fused image contrast polarization-free. Time-of-flight (TOF) measurements of coherent THz pulses further enable objects at different distances or depths to be resolved. The demonstrated ghost spintronic THz-emitter-array microscope (GHOSTEAM) is a radically novel imaging tool for THz near-field imaging

opening paradigm-shifting opportunities for nonintrusive label-free bioimaging in a broadband frequency range from 0.1 to 30 THz (namely

3.3–1000 cm

−1

关键词

Keywords

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