Title: Widely linear and non-phase-matched optical-to-terahertz conversion on GaSe:Te crystals
Authors: Chu, Wei-Chen
Ku, Shin An
Wang, Harn Jiunn
Luo, Chih Wei
Andreev, Yu. M.
Lanskii, Grigory
Kobayashi, T.
電子物理學系
Department of Electrophysics
Issue Date: 1-Mar-2012
Abstract: We demonstrate the widely linear and broadband terahertz (THz) generation on GaSe:Te crystals by femtosecond laser pulses. It was found that the dopant, Te atoms, in GaSe crystals significantly enhances the efficiency of THz generation, and its central frequency can be tuned by varying the crystal thickness through non-phase-matched optical rectification. Moreover, the wide-ranging linearity for the optical-to-THz conversion and central-frequency-tunable THz generation promise for GaSe: Te crystals to be potential materials for high-power (> 1.36 mu W) THz applications. (C) 2012 Optical Society of America
URI: http://dx.doi.org/10.1364/OL.37.000945
http://hdl.handle.net/11536/15567
ISSN: 0146-9592
DOI: 10.1364/OL.37.000945
Journal: OPTICS LETTERS
Volume: 37
Issue: 5
Begin Page: 945
End Page: 947
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