Terahertz emission from a double asymmetric quantum well p-i-n structure

Authors

Jonathan Ray Abat ⋅ PH National Institute of Physics, University of the Philippines Diliman
Eloise Anguluan ⋅ PH National Institute of Physics, University of the Philippines Diliman
Kaye Ann de las Alas ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arvin Mabilangan ⋅ PH National Institute of Physics, University of the Philippines Diliman
Renebeth Payod ⋅ PH National Institute of Physics, University of the Philippines Diliman
Joselito Joselito ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elmer Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Terahertz time-domain spectroscopy was performed on a double asymmet- ric quantum wells p-i-n structure. Part of the p-layer of the sample was etched to ensure that the THz emission is from the active region. THz emission was detected on both unetched and etched samples. The THz signal was improved after removing the GaAs cap layer which in effect minimized the free-carrier THz absorption. Optical characterizations were also performed to verify the presence of quantum wells in the sample which also confirms the amplification of the THz emission due to the enhanced quantum well absorption.

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Issue

2012: Proceedings of the 30th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2012-PB-24

Section

Poster Session PB

Published

2012-10-22

How to Cite

[1]

JR Abat, E Anguluan, KA de las Alas, A Mabilangan, R Payod, J Joselito, A Salvador, A Somintac, and E Estacio, Terahertz emission from a double asymmetric quantum well p-i-n structure, Proceedings of the Samahang Pisika ng Pilipinas 30, SPP2012-PB-24 (2012). URL: https://proceedings.spp-online.org/article/view/SPP2012-PB-24.