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

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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.