Optical generation of polarized photoluminescence from GaAs(100)

Zhan Hu, Sima Singha, Daniel H. Rich, Robert J. Gordon

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Polarized photoluminescence from GaAs(100) was generated using shaped ultrashort laser pulses. A train of three pulses separated by an integer multiple of the longitudinal optical phonon period produced p-polarized continuum emission, whereas trains with half-integer multiples of the phonon period as well as single Gaussian pulses produced s-polarized emission. The p-polarized emission is attributed to recombination of carriers in the L-valley, resulting from plasma generation and coherent phonon-excitation by the pulse train, whereas the s-polarized emission is caused by reflection by the melted surface of unpolarized plasma emission.

Original languageEnglish
Article number141102
JournalApplied Physics Letters
Volume100
Issue number14
DOIs
StatePublished - 2 Apr 2012

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