Comparison of photoconductive antenna performance on LT-GaAs and SI-GaAs substrates
Publication
, Conference
Tuo, M; Zhang, J; Liang, M; Ng, WR; Gehm, ME; Xin, H
Published in: IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
September 18, 2014
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.
Duke Scholars
Published In
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
DOI
ISSN
1522-3965
ISBN
9781479935406
Publication Date
September 18, 2014
Start / End Page
167 / 168
Citation
APA
Chicago
ICMJE
MLA
NLM
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 IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) (pp. 167–168). https://doi.org/10.1109/APS.2014.6904415
Tuo, M., J. Zhang, M. Liang, W. R. Ng, M. E. Gehm, and H. Xin. “Comparison of photoconductive antenna performance on LT-GaAs and SI-GaAs substrates.” In IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), 167–68, 2014. https://doi.org/10.1109/APS.2014.6904415.
Tuo M, Zhang J, Liang M, Ng WR, Gehm ME, Xin H. Comparison of photoconductive antenna performance on LT-GaAs and SI-GaAs substrates. In: IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). 2014. p. 167–8.
Tuo, M., et al. “Comparison of photoconductive antenna performance on LT-GaAs and SI-GaAs substrates.” IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), 2014, pp. 167–68. Scopus, doi:10.1109/APS.2014.6904415.
Tuo M, Zhang J, Liang M, Ng WR, Gehm ME, Xin H. Comparison of photoconductive antenna performance on LT-GaAs and SI-GaAs substrates. IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). 2014. p. 167–168.
Published In
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
DOI
ISSN
1522-3965
ISBN
9781479935406
Publication Date
September 18, 2014
Start / End Page
167 / 168