Optical gain in (Zn,Cd)Se-Zn(S,Se) quantum wells as a function of temperature

F. P. Logue, P. Rees, C. Jordan, J. F. Donegan, J. Hegarty, F. Hiei, S. Taniguchi, T. Hino, K. Nakano, A. Ishibashi

Research output: Contribution to journalArticle

Abstract

We have investigated the mechanism of stimulated emission in ZnCdSe-ZnSSe quantum wells through measurements of the optical gain spectrum between 77 and 270 K. We also calculated the optical gain using a model which included many-body effects and found excellent agreement with our measurements. Our results are inconsistent with an excitonic gain mechanism and we conclude that the stimulated emission arises from an electron-hole plasma in our samples. However, we find that the electron-hole Coulomb interaction is still significant at room temperature in II-VI heterostructures.

Original languageEnglish (US)
Pages (from-to)623-626
Number of pages4
JournalJournal of Crystal Growth
Volume184-185
DOIs
StatePublished - 1998

Keywords

  • Gain spectra
  • II-VI quantum wells
  • Many-body theory

ASJC Scopus subject areas

  • Condensed Matter Physics

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