Observation of strong and broadband terahertz induced electroabsorption in multiple quantum wells

Chia-Yeh Li; Denis V. Seletskiy; Jeffrey G. Cederberg; Mansoor Sheik-Bahae

doi:10.1117/12.2004633

14 March 2013 Observation of strong and broadband terahertz induced electroabsorption in multiple quantum wells

Chia-Yeh Li, Denis V. Seletskiy, Jeffrey G. Cederberg, Mansoor Sheik-Bahae

Proceedings Volume 8623, Ultrafast Phenomena and Nanophotonics XVII; 86230O (2013) https://doi.org/10.1117/12.2004633
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

We report the observation of strong terahertz-induced electroabsoption (EA) modulation in in multiple double quantum well (MDQW) structures Broadband terahertz generated by two-color laser induced plasma is focused (~1MV/cm) onto the MQW and spectro-temporal response is probed in transmission geometry, where up to 60% modulation signals are observed. EAS signal is attributed to several mechanisms, including observed qualitative agreement with the two-dimensional Franz-Keldysh response. Utilizing strong EA signals, we present a simple THz imaging scheme using conventional imagers.

Citation Download Citation

Chia-Yeh Li, Denis V. Seletskiy, Jeffrey G. Cederberg, and Mansoor Sheik-Bahae "Observation of strong and broadband terahertz induced electroabsorption in multiple quantum wells", Proc. SPIE 8623, Ultrafast Phenomena and Nanophotonics XVII, 86230O (14 March 2013); https://doi.org/10.1117/12.2004633

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