Interaction between femtosecond laser pulses and $\mathrm{Cd}{\mathrm{S}}_{x}{\mathrm{Se}}_{1\ensuremath{-}x}$ quantum dots in glasses

Interaction between femtosecond laser pulses and $Cd S_{x} {Se}_{1 - x}$ quantum dots in glasses

R. Osellame, R. Martinez Vazquez, G. Cerullo, R. Ramponi, O. Svelto, V. Russo, A. Li Bassi, C. E. Bottani, and C. Spinella

Phys. Rev. B 76, 045340 – Published 31 July 2007

Abstract

Interaction between femtosecond laser pulses and semiconductor nanocrystals is thoroughly studied. Absorption, Raman, and photoluminescence spectra together with transmission electron microscopy images are presented for irradiated regions and compared to those of the pristine material. A simple model based on charge transfer to the glass matrix from the nanocrystals is adopted to explain the strong color changes and the photoluminescence quenching induced by the femtosecond laser pulses.

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Received 22 December 2006

DOI:https://doi.org/10.1103/PhysRevB.76.045340

Authors & Affiliations

R. Osellame^*, R. Martinez Vazquez, G. Cerullo, R. Ramponi, and O. Svelto

Istituto di Fotonica e Nanotecnologie-CNR and Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, I-20133 Milano, Italy

V. Russo, A. Li Bassi, and C. E. Bottani

Center for NanoEngineered MAterials and Surfaces (NEMAS), CNISM, and Dipartimento di Ingegneria Nucleare, Politecnico di Milano, Via Ponzio 34/3, I-20133 Milano, Italy

C. Spinella

Istituto per la Microelettronica e Microsistemi-CNR, Stradale Primosole 50, I-95121 Catania, Italy

^*roberto.osellame@polimi.it

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Vol. 76, Iss. 4 — 15 July 2007

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Physical Review B

covering condensed matter and materials physics

Interaction between femtosecond laser pulses and $Cd S_{x} {Se}_{1 - x}$ quantum dots in glasses

R. Osellame, R. Martinez Vazquez, G. Cerullo, R. Ramponi, O. Svelto, V. Russo, A. Li Bassi, C. E. Bottani, and C. Spinella

Phys. Rev. B 76, 045340 – Published 31 July 2007

Abstract

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Physical Review B

covering condensed matter and materials physics

Interaction between femtosecond laser pulses and CdSxSe1−x quantum dots in glasses

R. Osellame, R. Martinez Vazquez, G. Cerullo, R. Ramponi, O. Svelto, V. Russo, A. Li Bassi, C. E. Bottani, and C. Spinella

Phys. Rev. B 76, 045340 – Published 31 July 2007

Abstract

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Interaction between femtosecond laser pulses and $Cd S_{x} {Se}_{1 - x}$ quantum dots in glasses