Resonant and nonresonant ultrafast processes in semiconductor doped glasses

Carlos H. Brito Cruz

doi:10.1117/12.2316053

1 September 1996 Resonant and nonresonant ultrafast processes in semiconductor doped glasses

Carlos H. Brito Cruz

Proceedings Volume 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology; 2778A4 (1996) https://doi.org/10.1117/12.2316053
Event: 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 1996, Taejon, Korea, Republic of

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 CdS_xSe_1-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.

Citation Download Citation

Carlos H. Brito Cruz "Resonant and nonresonant ultrafast processes in semiconductor doped glasses", Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 2778A4 (1 September 1996); https://doi.org/10.1117/12.2316053

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