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Proceedings Paper

Broadband terahertz radiation produced in an AgGaSe2 crystal
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Paper Abstract

The linear and nonlinear optical properties are investigated in a <110>-cut, 485 μm-thick AgGaSe2 crystal. The linear optical properties are studied by performing terahertz time-domain spectroscopy measurements, which allow the refractive indices and the extinction coefficients to be calculated for the uniaxial AgGaSe2 crystal. Optical rectification measurements are conducted to investigate the crystal’s nonlinear optical properties, which produce broadband terahertz radiation pulses having spectral components between 0.02 and 4 THz. Due to the large optical rectification coherence length exhibited by the AgGaSe2 crystal, in-phase terahertz radiation is generated across the entire length of this 485 μm-thick crystal. Therefore, this crystal can be utilized as a source of broadband terahertz radiation in areas such as medicine and security.

Paper Details

Date Published: 2 March 2020
PDF: 6 pages
Proc. SPIE 11279, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII, 1127913 (2 March 2020); doi: 10.1117/12.2546516
Show Author Affiliations
B. N. Carnio, Univ. of Alberta (Canada)
K. T. Zawilski, BAE Systems (United States)
P. G. Schunemann, BAE Systems (United States)
A. Y. Elezzabi, Univ. of Alberta (Canada)

Published in SPIE Proceedings Vol. 11279:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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