Optical spectroscopy of a GaAs/AlGaAs quantum wire structure using near-field scanning optical microscopy

Robert D. Grober, Timothy D. Harris, Jay K. Trautman, Eric Betzig, Werner Wegscheider, Loren Pfeiffer, Ken West

Research output: Contribution to journalArticlepeer-review

142 Scopus citations

Abstract

We report the first spectroscopic study using a low temperature near-field scanning optical microscope. We have studied an array of GaAs/AlGaAs cleaved edge overgrowth quantum wires. The three luminescence peaks originate from different structures in the sample: The (001)-oriented multiple quantum wells, the (110)-oriented single quantum well, and the quantum wires. The linewidth of the quantum wire emission is related to roughness in the (110)-oriented single quantum well. Quenching of the multiple quantum wells and single quantum well emission near the quantum wires is attributed to diffusion of photoexcited carriers into the wires.

Original languageEnglish (US)
Pages (from-to)1421-1423
Number of pages3
JournalApplied Physics Letters
Volume64
Issue number11
DOIs
StatePublished - 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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