1- Femtosecond relaxation of photoexcited

holes in bulk gallium arsenide

A. Chébira, J. Chesnoy, and G. M. Gale

Phys. Rev. B 46, 4559 – Published 15 August 1992

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.46.4559

http://europepmc.org/abstract/med/10004211

http://cat.inist.fr/?aModele=afficheN&cpsidt=5497299

ABSTRACT

The relaxation to the top of the valence band of nonequilibrium photoexcited holes in n-type doped bulk gallium

arsenide at 77 K is selectively measured by a femtosecond luminescence up-conversion technique. In the low-

excitation regime, hole decay times between 560 and 330 fs are observed for fully-ionized-donor concentrations

in the range 6×1017 to 2.4×1018 cm−3. The theoretical treatment of weakly photoexcited n-type GaAs displays

certain simplifications when compared with earlier work, as both the lattice and the electron bath are in

thermodynamic equilibrium, and the results of a simulation invoking hole–LO-phonon and hole-electron

interactions give good agreement with experiment.

J-GLOBAL ID：200902094334810590 整理番号：92A0728035

Femtosecond relaxation of photoexcited holes in bulk

gallium arsenide. バルクひ化ガリウムにおける光励起正孔のフェムト秒緩和

著者：CHEBIRA A (Ecole Polytechnique, Palaiseau, FRA)、CHESNOY J (Ecole Polytechnique, Palaiseau, FRA)、GALE G

M (Ecole Polytechnique, Palaiseau, FRA)

資料名：Phys Rev B Condens Matter Mater Phys 巻：46 号：8 ページ：4559-4563

発行年：1992年08月15日

http://jglobal.jst.go.jp/public/20090422/200902094334810590

Page : 108

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2- Amplification of a femtosecond laser at

eight kilohertz with a continuously pumped

YAG laser

A. Chébira and J. Chesnoy

Optics communication, vol. 76, no3-4, pp. 235-238; 1990

ABSTRACT

Starting from a continuously pumped Nd:YAG laser that is Q-switched, cavity dumped and frequency doubled, a

cw femtosecond oscillator is amplified at eight kilohertz up to the microjoule level per pulse. The excellent beam

quality of the pump laser and the optimized dye amplifier configuration make our system a simple alternative to

the pumping of the dye amplifier by a copper vapor laser

http://cat.inist.fr/?aModele=afficheN&cpsidt=19302412

http://www.worldpapercat.com/1753/Article3478853.htm

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2-Subpicosecond fluorescence dynamics of dye

molecules

A. Mokhtari, A. Chébira and J. Chesnoy

Journal of the Optical Society of America B, vol 7, issue 8, pp 1551-

1117; 1990

https://doi.org/10.1364/JOSAB.7.001551

Abstract

Time- and frequency-resolved fluorescence of dye molecules with femtosecond resolution gives new

information on the intramolecular and intermolecular dynamics of large molecules in solution. We analyze data

that were obtained recently by the upconversion technique together with new results: Access to vibrational

coherence effects and to vibrational redistribution, thermalization, and cooling is illustrated for fluorescent dyes.

The ultrafast fluorescence decay that accompanys internal conversion of a triphenylmethane dye is also

analyzed.

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