Comparison of the terahertz emission from zinc oxide and low-temperature-grown gallium arsenide photoconductive antennas via the Drude-Lorentz model

Authors

  • Jose Mari Sebastian C. Arcilla National Institute of Physics, University of the Philippines Diliman
  • Lourdes Nicole F. Dela Rosa National Institute of Physics, University of the Philippines Diliman
  • Vince Paul P. Juguilon National Institute of Physics, University of the Philippines Diliman
  • Ivan Cedrick M. Verona National Institute of Physics, University of the Philippines Diliman
  • Alexander E. De Los Reyes National Institute of Physics, University of the Philippines Diliman
  • Hannah R. Bardolaza National Institute of Physics, University of the Philippines Diliman
  • Elmer S. Estacio National Institute of Physics, University of the Philippines Diliman

Abstract

We investigated the terahertz (THz) emission characteristics of zinc oxide (ZnO) and compared it with the widely used low-temperature-grown gallium arsenide (LT-GaAs) photoconductive antennas (PCA) by employing the Drude-Lorentz model. The calculated THz peak emission values of ZnO, and LT-GaAs are 106 Vm−1, and 133 Vm−1, respectively. Furthermore, we simulated the laser pump power (Ppump) and bias voltage (Vbias) dependence of the ZnO and LT-GaAs PCA THz peak amplitude. The maximum emission values of ZnO before voltage breakdown (VB), and optical damage threshold (PB) are at 6401 Vm−1, and 1602 Vm−1, respectively. Similarly, for LT-GaAs, the maximum emission are 797 Vm−1, and 531 Vm−1 before VB, and PB occur, respectively. These results provide insights for identifying the optimal parameters for future ZnO-based PCA design and operation.

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Published

2023-07-12

Issue

2023: Proceedings of the 41st Samahang Pisika ng Pilipinas Physics Conference

Section

Condensed Matter Physics and Materials Science

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All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.

How to Cite

[1]
“Comparison of the terahertz emission from zinc oxide and low-temperature-grown gallium arsenide photoconductive antennas via the Drude-Lorentz model”, Proc. SPP, vol. 41, no. 1, pp. SPP–2023, Jul. 2023, Accessed: Mar. 25, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2023-2F-07