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 (P_pump) and bias voltage (V_bias) dependence of the ZnO and LT-GaAs PCA THz peak amplitude. The maximum emission values of ZnO before voltage breakdown (V_B), and optical damage threshold (P_B) 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 V_B, and P_B occur, respectively. These results provide insights for identifying the optimal parameters for future ZnO-based PCA design and operation.

Downloads

Issue

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

Article ID

SPP-2023-2F-07

Section

Condensed Matter Physics and Materials Science

Published

2023-07-12

How to Cite

[1]

JMSC Arcilla, LNF Dela Rosa, VPP Juguilon, ICM Verona, AE De Los Reyes, HR Bardolaza, and ES Estacio, Comparison of the terahertz emission from zinc oxide and low-temperature-grown gallium arsenide photoconductive antennas via the Drude-Lorentz model, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-2F-07 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-2F-07.