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Proceedings Paper

Research on the breakdown mechanism of photoconductive antenna
Author(s): Cheng Ma; Song Zhang; Hangjuan Jia; Yu Ji; Wei Shi
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Paper Abstract

Terahertz (Thz) photoconductive antenna is one of the most common devices for the generation of terahertz wave. Basing on the theory of current instantaneous impact model, the most effective way of improving the THZ wave power is to increase bias voltage and laser power, but the damage and the breakdown of photoconductive antenna is easy to occur when the bias voltage increases. In this paper, the physical breakdown mechanism of the antenna is researched on the different trigger positions and the different bias voltages. Trigger position is more likely to be breakdown because of the local high electric field stimulated by photon-generated carriers. Increasing bias voltage not only caused the current increasing quickly, but also ablated thermal breakdown of antenna electrode and resulted in antenna failure.

Paper Details

Date Published: 5 November 2015
PDF: 5 pages
Proc. SPIE 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015, 97950T (5 November 2015); doi: 10.1117/12.2211840
Show Author Affiliations
Cheng Ma, Xi’an Univ. of Technology (China)
Song Zhang, Xi’an Univ. of Technology (China)
Hangjuan Jia, Xi’an Univ. of Technology (China)
Yu Ji, Xi’an Univ. of Technology (China)
Wei Shi, Xi’an Univ. of Technology (China)

Published in SPIE Proceedings Vol. 9795:
Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015
Shenggang Liu; Songlin Zhuang; Michael I. Petelin; Libin Xiang, Editor(s)

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