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Proceedings Paper

A transmitted terahertz emission microscopy
Author(s): Yu-Ping Yang; Wei Yan; Li Wang
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Paper Abstract

A novel transmitted terahertz-emission microscopy (TTEM) is proposed and developed for improving the spatial resolution of THz imaging. An epitaxial GaAs film grown on the GaP substrate was used as THz emitter; the transmitted THz signal was collected and detected by a ZnTe electric-optical crystal. Because the thick of GaAs layer is merely 1 μm, the THz wave source has the same size of the excited point. While attaching a sample directly onto the emitter, the spatial resolution is decided by the diameter of focused pump beam, which can be achieved a few micrometers and tunable. In addition, it can avoid the loss of the spectral components. By means of the near-field detection, the intensity, spatial resolution and bandwidth of THz signal in this system can be enhanced further. The configuration and characteristics of this microscopy are described in detail.

Paper Details

Date Published: 4 January 2008
PDF: 9 pages
Proc. SPIE 6840, Terahertz Photonics, 68400G (4 January 2008); doi: 10.1117/12.758808
Show Author Affiliations
Yu-Ping Yang, Central Univ. for Nationalities (China)
Wei Yan, Institute of Physics (China)
Li Wang, Institute of Physics (China)

Published in SPIE Proceedings Vol. 6840:
Terahertz Photonics
Cunlin Zhang; Xi-Cheng Zhang, Editor(s)

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