Optical nonlinearities and ultrafast carrier dynamics in semiconductor doped glasses

V. S. Williams; G. R. Olbright; B. D. Fluegel; S. W. Koch; N. Peyghambarian

doi:10.1080/713822328

Optical nonlinearities and ultrafast carrier dynamics in semiconductor doped glasses

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

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Abstract

The linear and nonlinear optical properties of commercially available CdS_xSe_1-x doped glasses are reviewed and the origin, magnitude, and temporal response of the nonlinearities are discussed. The room-temperature carrier dynamics are analysed 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 bandedge. The carrier recombination lifetime is measured to be ≅10 ps at higher carrier densities.

Original language	English (US)
Pages (from-to)	1979-1993
Number of pages	15
Journal	Journal of Modern Optics
Volume	35
Issue number	12
DOIs	https://doi.org/10.1080/713822328
State	Published - Dec 1988

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1080/713822328

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@article{710e87924cc342f8a6036b75f2bb0706,

title = "Optical nonlinearities and ultrafast carrier dynamics in semiconductor doped glasses",

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 analysed 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 bandedge. The carrier recombination lifetime is measured to be ≅10 ps at higher carrier densities.",

author = "Williams, {V. S.} and Olbright, {G. R.} and Fluegel, {B. D.} and Koch, {S. W.} and N. Peyghambarian",

note = "Funding Information: Acknowledgments The authors would like to acknowledge support from the Optical Circuitry Cooperative of the University of Arizona, the National Science Foundation (grant numbers EET8610170, EET 8620265, and INT8713068 travel grant), JSOP, NATO (travel grant numbers 86/0749 and, 87/0736), ONR/SDIO (grant number N00014-86-K-0719), DARPA/RADC (grant number F30602-87-C-0009), and the John von Neumann Computer Center for the CPU time .",

year = "1988",

month = dec,

doi = "10.1080/713822328",

language = "English (US)",

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journal = "Journal of Modern Optics",

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T1 - Optical nonlinearities and ultrafast carrier dynamics in semiconductor doped glasses

AU - Williams, V. S.

AU - Olbright, G. R.

AU - Fluegel, B. D.

AU - Koch, S. W.

AU - Peyghambarian, N.

N1 - Funding Information: Acknowledgments The authors would like to acknowledge support from the Optical Circuitry Cooperative of the University of Arizona, the National Science Foundation (grant numbers EET8610170, EET 8620265, and INT8713068 travel grant), JSOP, NATO (travel grant numbers 86/0749 and, 87/0736), ONR/SDIO (grant number N00014-86-K-0719), DARPA/RADC (grant number F30602-87-C-0009), and the John von Neumann Computer Center for the CPU time .

PY - 1988/12

Y1 - 1988/12

N2 - 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 analysed 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 bandedge. The carrier recombination lifetime is measured to be ≅10 ps at higher carrier densities.

AB - 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 analysed 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 bandedge. The carrier recombination lifetime is measured to be ≅10 ps at higher carrier densities.

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SN - 0950-0340

IS - 12

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Optical nonlinearities and ultrafast carrier dynamics in semiconductor doped glasses

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