Response spectra from mid- to far-infrared, polarization behaviors, and effects of electron numbers in quantum-dot photodetectors

B. Aslan*, H. C. Liu, M. Korkusinski, Shun-Jen Cheng, P. Hawrylak

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

Spectral photoresponse curves, of InAs/GaAs self-assembled quantum-dot infrared photodetectors with various doping levels, were reported. Devices were illuminated through the 45° polished edge facets and data were taken with two sets of beamsplitters and windows. Polarization behaviors of transitions and effects of the number of electrons on the photoresponse spectra were demonstrated. A strong in-plane polarized, bound-to-bound transition feature was observed.

Original languageEnglish
Pages (from-to)630-632
Number of pages3
JournalApplied Physics Letters
Volume82
Issue number4
DOIs
StatePublished - 27 Jan 2003

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