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Proceedings Paper

Resonant and nonresonant ultrafast processes in semiconductor doped glasses
Author(s): Carlos H. Brito Cruz
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Paper Abstract

We review studies of resonant and nonresonant ultrafast optical processes in semiconductor doped glasses. First we discuss measurements done in CdTe quantum-dots in glass, excited resonantly. In this case we observe a fast recombination, that depends on the size of the quantum-dot. For the smallest dots, with 3.1 nm average radius, the recovery time constant was found to be 360 fs. Then we describe the observation of the Optical Stark shift in CdSxSe1-x semiconductor-doped glass (SDG) excited under nonresonant below gap condition. An ultrafast and pure light-induced shift of the band edge is observed. For a pump intensity of 3 GW/cm2 the band shifts by 11 meV. The time response of the shift tracks the profile of the pumping pulse.

Paper Details

Date Published: 1 September 1996
PDF: 4 pages
Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 2778A4 (1 September 1996); doi: 10.1117/12.2316053
Show Author Affiliations
Carlos H. Brito Cruz, Univ. Estadual de Campinas (Brazil)


Published in SPIE Proceedings Vol. 2778:
17th Congress of the International Commission for Optics: Optics for Science and New Technology
Joon-Sung Chang; Jai-Hyung Lee; ChangHee Nam, Editor(s)

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