Ultrafast optical nonlinearities in II-VI compounds

B. Fluegel; M. Joffre; S. H. Park; R. Morgan; Y. Z. Hu; M. Lindberg; S. W. Koch; D. Hulin; A. Migus; A. Antonetti; N. Peyghambarian

doi:10.1016/0022-0248(90)91052-R

Ultrafast optical nonlinearities in II-VI compounds

B. Fluegel, M. Joffre, S. H. Park, R. Morgan, Y. Z. Hu, M. Lindberg, S. W. Koch, D. Hulin, A. Migus, A. Antonetti, N. Peyghambarian

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We review our experimental and theoretical results on the femtosecond laser excited CdS and CdSe bulk and quantum dots. Optical Stark effect in bulk CdS is reported where the electron-hole continuum states in addition to the bound-exciton states are blue shifted. The nonlinear optical properties of CdSe microcrystallites embedded in glass matrices are investigated using femtosecond and nanosecond laser pulses. Spectral hole-buring is observed which is accompanied by an induced absorption feature on the high-energy side. A 25±10 fs dephasing time is obtained from these measurements. It is concluded that Coulomb effects are important in quantum dots. They give rise to a ground state two-pair resonance on the low energy side of the one-pair state and higher energy two-pair resonances which are spectrally located between the one-pair states. Single-beam saturation experiments show that the intensities required for bleaching are larger for smaller crystallites.

Original language	English (US)
Pages (from-to)	643-649
Number of pages	7
Journal	Journal of Crystal Growth
Volume	101
Issue number	1-4
DOIs	https://doi.org/10.1016/0022-0248(90)91052-R
State	Published - Apr 1 1990

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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10.1016/0022-0248(90)91052-R

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@article{7e414ab2dfcf42c09b11083381eba577,

title = "Ultrafast optical nonlinearities in II-VI compounds",

abstract = "We review our experimental and theoretical results on the femtosecond laser excited CdS and CdSe bulk and quantum dots. Optical Stark effect in bulk CdS is reported where the electron-hole continuum states in addition to the bound-exciton states are blue shifted. The nonlinear optical properties of CdSe microcrystallites embedded in glass matrices are investigated using femtosecond and nanosecond laser pulses. Spectral hole-buring is observed which is accompanied by an induced absorption feature on the high-energy side. A 25±10 fs dephasing time is obtained from these measurements. It is concluded that Coulomb effects are important in quantum dots. They give rise to a ground state two-pair resonance on the low energy side of the one-pair state and higher energy two-pair resonances which are spectrally located between the one-pair states. Single-beam saturation experiments show that the intensities required for bleaching are larger for smaller crystallites.",

author = "B. Fluegel and M. Joffre and Park, {S. H.} and R. Morgan and Hu, {Y. Z.} and M. Lindberg and Koch, {S. W.} and D. Hulin and A. Migus and A. Antonetti and N. Peyghambarian",

note = "Funding Information: We appreciate receiving the samples for the quantum dot research from D.W. Hall and N. Borrelli at Corning Glass Works. We would like to fruitful discussions on quantum dots. The Arizona group would like to acknowledge support from NSF (grant numbers ECS-89099i3, ECS-8822305, and INT8713068 travel grant), ARO (grant number DAALO3-89-K-OiOO), NATO travel grant (numbers 86/0749 and 87/0736), ONR/SDIO (grant number N000i4-86-K-0719), the Optical Circuitry Cooperative of the University of Arizona, and the John von Neumann Computer Center for the CPU time. The ENSTA group acknowledges support from the Direction des Recherches et Etudes Techniques (grant number 88/077); GPS is Laboratoire Associ{\'e} au Centre National de la Recherche Scientifique (LA17).",

year = "1990",

month = apr,

day = "1",

doi = "10.1016/0022-0248(90)91052-R",

language = "English (US)",

volume = "101",

pages = "643--649",

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TY - JOUR

T1 - Ultrafast optical nonlinearities in II-VI compounds

AU - Fluegel, B.

AU - Joffre, M.

AU - Park, S. H.

AU - Morgan, R.

AU - Hu, Y. Z.

AU - Lindberg, M.

AU - Koch, S. W.

AU - Hulin, D.

AU - Migus, A.

AU - Antonetti, A.

AU - Peyghambarian, N.

N1 - Funding Information: We appreciate receiving the samples for the quantum dot research from D.W. Hall and N. Borrelli at Corning Glass Works. We would like to fruitful discussions on quantum dots. The Arizona group would like to acknowledge support from NSF (grant numbers ECS-89099i3, ECS-8822305, and INT8713068 travel grant), ARO (grant number DAALO3-89-K-OiOO), NATO travel grant (numbers 86/0749 and 87/0736), ONR/SDIO (grant number N000i4-86-K-0719), the Optical Circuitry Cooperative of the University of Arizona, and the John von Neumann Computer Center for the CPU time. The ENSTA group acknowledges support from the Direction des Recherches et Etudes Techniques (grant number 88/077); GPS is Laboratoire Associé au Centre National de la Recherche Scientifique (LA17).

PY - 1990/4/1

Y1 - 1990/4/1

N2 - We review our experimental and theoretical results on the femtosecond laser excited CdS and CdSe bulk and quantum dots. Optical Stark effect in bulk CdS is reported where the electron-hole continuum states in addition to the bound-exciton states are blue shifted. The nonlinear optical properties of CdSe microcrystallites embedded in glass matrices are investigated using femtosecond and nanosecond laser pulses. Spectral hole-buring is observed which is accompanied by an induced absorption feature on the high-energy side. A 25±10 fs dephasing time is obtained from these measurements. It is concluded that Coulomb effects are important in quantum dots. They give rise to a ground state two-pair resonance on the low energy side of the one-pair state and higher energy two-pair resonances which are spectrally located between the one-pair states. Single-beam saturation experiments show that the intensities required for bleaching are larger for smaller crystallites.

AB - We review our experimental and theoretical results on the femtosecond laser excited CdS and CdSe bulk and quantum dots. Optical Stark effect in bulk CdS is reported where the electron-hole continuum states in addition to the bound-exciton states are blue shifted. The nonlinear optical properties of CdSe microcrystallites embedded in glass matrices are investigated using femtosecond and nanosecond laser pulses. Spectral hole-buring is observed which is accompanied by an induced absorption feature on the high-energy side. A 25±10 fs dephasing time is obtained from these measurements. It is concluded that Coulomb effects are important in quantum dots. They give rise to a ground state two-pair resonance on the low energy side of the one-pair state and higher energy two-pair resonances which are spectrally located between the one-pair states. Single-beam saturation experiments show that the intensities required for bleaching are larger for smaller crystallites.

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EP - 649

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 1-4

ER -

Ultrafast optical nonlinearities in II-VI compounds

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