Skip navigation
Skip navigation

Influence of surface passivation on ultrafast carrier dynamics and terahertz radiation generation in GaAs

Lloyd-Hughes, J.; Merchant, S. K. E.; Lan, F.; Jagadish, C.; Castro-Camus, E.; Johnston, M. B.; Tan, Hark Hoe


The carrier dynamics of photoexcited electrons in the vicinity of the surface of (NH₄)₂S-passivated GaAs were studied via terahertz (THz) emission spectroscopy and optical-pump THz-probe spectroscopy. THz emission spectroscopy measurements, coupled with Monte Carlo simulations of THz emission, revealed that the surface electric field of GaAs reverses after passivation. The conductivity of photoexcited electrons was determined via optical-pump THz-probe spectroscopy, and was found to...[Show more]

CollectionsANU Research Publications
Date published: 2006-12-04
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.2398915


File Description SizeFormat Image
01_Lloyd-Hughes_Influence_of_surface_2006.pdf431.86 kBAdobe PDFThumbnail

Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  17 November 2022/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator