Optical measurements of temperature in a quasi-two-dimensional exciton system

M. R. Reshotko*, L. D. Shvartsman, J. E. Golub

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We have used time-resolved photoluminescence spectroscopy to measure the temperature of a gas of quasi-two-dimensional excitons. The exciton gas consists of both spatially direct and spatially indirect excitons in a coupled GaAs/AlxGa1-xAs double-quantum-well system. We show by experiment and modeling that the ratio of the intensities of the recombination radiation constitutes a sensitive, calibrated thermometer for the electron system. The technique is insensitive to inhomogeneous effects such as well-width fluctuations and is feasible at temperatures as low as several K.

Original languageAmerican English
Pages (from-to)4692-4695
Number of pages4
JournalPhysical Review B
Issue number7
StatePublished - 1994


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