The document discusses three papers authored by A. Chébira and J. Chesnoy: 1. The first paper measures the relaxation of photoexcited holes in n-type gallium arsenide over 330-560 femtoseconds using luminescence up-conversion. Hole decay times decreased with increasing donor concentration from 6×1017 to 2.4×1018 cm−3. 2. The second paper amplifies a femtosecond laser at 8 kilohertz using a continuously pumped YAG laser. The excellent beam quality and optimized dye amplifier configuration provide a simple alternative to pumping with a copper vapor laser. 3. The third paper uses femtosecond fluorescence to study

1. 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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7. 2- Amplification of a femtosecond laser at
eight kilohertz with a continuously pumped
YAG laser
A. Chébira and J. Chesnoy
Optics communication, vol. 76, no
3-4, 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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12. 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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