Optical nonlinearities and ultrafast carrier dynamics in semiconductor doped glasses

V. S. Williams, G. R. Olbright, B. D. Fluegel, Stephan W Koch, Nasser N Peyghambarian

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

The linear and nonlinear optical properties of commercially available CDSxSe1-x doped glasses are reviewed and the origin, magnitude, and temporal response of the nonlinearities are discussed. The room-temperature carrier dynamics are analyzed using femtosecond interband pump-probe measurements. Our experimental results show the evolution of the carriers into a hot, quasi-thermal plasma distribution via electron-electron and electron-phonon scattering. The quasi-thermal distribution cools to the lattice temperature in about 750 fs filling the states just above the band-edge. This band-filling nonlinearity is seen as the bleaching of the absorption above the band-edge. The carrier recombination lifetime is measured to be ≅ 10 ps at higher carrier densities.

Original languageEnglish (US)
Pages (from-to)1979-1993
Number of pages15
JournalJournal of Modern Optics
Volume35
Issue number12
StatePublished - Dec 1988

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nonlinearity
glass
thermal plasmas
bleaching
electron distribution
electrons
pumps
optical properties
life (durability)
probes
room temperature
scattering
temperature

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Optical nonlinearities and ultrafast carrier dynamics in semiconductor doped glasses. / Williams, V. S.; Olbright, G. R.; Fluegel, B. D.; Koch, Stephan W; Peyghambarian, Nasser N.

In: Journal of Modern Optics, Vol. 35, No. 12, 12.1988, p. 1979-1993.

Research output: Contribution to journalArticle

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