Comparison of photoconductive antenna performance on LT-GaAs and SI-GaAs substrates

Mingguang Tuo, Jitao Zhang, Min Liang, Wei Ren Ng, Michael E. Gehm, Hao Xin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In this work, butterfly shaped photoconductive antennas (PCAs) on low-temperature grown (LT) GaAs and semi-insulating (SI) GaAs substrate as terahertz (THz) emitters are experimentally characterized and compared. Dependences of the THz radiated field on the applied DC bias voltage and laser pump power are compared. Quadratic DC bias dependence is seen for SI-GaAs PCA compared to a linear dependence for LT-GaAs PCA. Scaling rule can be applied to the laser power dependence to fit the measurement data and the saturation can be attributed to the screening effect. Studies of material property influence on THz radiated power allow exploration of ways to enhance PCA performance.

Original languageEnglish (US)
Title of host publication2014 IEEE Antennas and Propagation Society International Symposium(APSURSI)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages167-168
Number of pages2
ISBN (Electronic)9781479935406
DOIs
StatePublished - Sep 18 2014
Event2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014 - Memphis, United States
Duration: Jul 6 2014Jul 11 2014

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)1522-3965

Other

Other2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014
CountryUnited States
CityMemphis
Period7/6/147/11/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Tuo, M., Zhang, J., Liang, M., Ng, W. R., Gehm, M. E., & Xin, H. (2014). Comparison of photoconductive antenna performance on LT-GaAs and SI-GaAs substrates. In 2014 IEEE Antennas and Propagation Society International Symposium(APSURSI) (pp. 167-168). [6904415] (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APS.2014.6904415