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Proceedings Paper

Effecting factor of peak frequency of THz wave from photoconductive antennas
Author(s): Suguo Chen; Wei Shi; Lei Hou; Ruijuan Dai
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Paper Abstract

Photoconductive antennas with different structures generate terahertz (THz) waves with different peak frequencies at the same experimental conditions, so does the same antenna at different experimental conditions. It is necessary to investigate the determinants of peak frequencies of THz radiation from photoconductive antenna to obtain the THz wave with required peak frequency. In this paper, the factors of laser spot size, trapping time, carrier lifetime, carrier density, bias field, antenna gap size were analyzed based on our experiment and literatures. The peak frequency moved to higher frequency with the decrease of antenna gap size, carrier lifetimes, trapping time, laser beam diameter, and the peak frequency moved to lower frequency with the decrease of bias field, carrier densities.

Paper Details

Date Published: 13 March 2012
PDF: 6 pages
Proc. SPIE 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology, 833016 (13 March 2012); doi: 10.1117/12.919655
Show Author Affiliations
Suguo Chen, Xi'an Univ. of Technology (China)
Wei Shi, Xi'an Univ. of Technology (China)
Xi'an Jiaotong Univ. (China)
Lei Hou, Xi'an Univ. of Technology (China)
Ruijuan Dai, Xi'an Univ. of Technology (China)


Published in SPIE Proceedings Vol. 8330:
Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology
Jianquan Yao; X. C. Zhang; Dapeng Yan; Jinsong Liu, Editor(s)

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