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Type: Artigo de evento
Title: Resonant And Nonresonant Ultrafast Processes In Semiconductor Doped Glasses
Author: Cruz C.H.B.
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 xSe1-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.
Rights: aberto
Identifier DOI: 
Date Issue: 1996
Appears in Collections:Unicamp - Artigos e Outros Documentos

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