Enhancement of terahertz emission of semi-insulating gallium arsenide via zinc oxide thin film surface modification

Authors

  • Archel Susvilla Escaro ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Erick John Carlo Solibet ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Raymund Veloz ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Neil Irvin Cabello ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Miguel Bacaoco ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Lorenzo Lopez, Jr. ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Maria Angela Faustino ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Alexander De Los Reyes ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Arven Cafe ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Elmer Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Arnel Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman

Keywords:

Antireflection coatings 42.79.Wc, Ultrafast spectroscopy 78.47.J, Ultrafast processes 42.65.Re, Spray coating techniques 81.15.Rs

Abstract

This study reports on the Terahertz (THz) emission of semi-insulating Gallium Arsenide (GaAs) substrate coated with Zinc Oxide (ZnO) thin film via spray pyrolysis. Using a reflection-mode THZ time domain spectroscopy (TDS), it was shown  that enhancement in the THZ emission was observed with ZnO-coated SI-GaAs compared to the bare substrate. The enhancement is partly attributed to the decreased reflectivity due to the  modification of the surface by addition of a ZnO thin film on the GaAs substrate which translates to higher photon absorbance of the material. 

Proceedings SPP 2017 Cover

Downloads

Published

2017-06-07

Issue

2017: Proceedings of the 35th Samahang Pisika ng Pilipinas Physics Conference

Section

Poster Session A (Materials Science, Instrumentation, and Photonics)

License

Copyright License Agreement for Full Articles

How to Cite

[1]
“Enhancement of terahertz emission of semi-insulating gallium arsenide via zinc oxide thin film surface modification”, Proc. SPP, vol. 35, no. 1, p. SPP-2017-PA-03, Jun. 2017, Accessed: Apr. 30, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/244