10 June 1996 Resonance hyper-Raman and second-harmonic scattering by semiconductor quantum dots embedded in a dielectric medium
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Proceedings Volume 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials; (1996); doi: 10.1117/12.242144
Event: International Conference on Coherent and Nonlinear Optics, 1995, St. Petersburg, Russian Federation
Abstract
The excitation profile of both resonant hyper-Raman and second-harmonic scattering in a CdS quantum dot system are reported for the first time. It is found that in the respective two-photon excitation spectra around the fundamental absorption region, two maxima more pronounced than those of one-photon absorption (OPA) spectrum are observed with narrower widths, and that their energy positions shift from the OPA peaks. The present signals may be interpreted as arising from two-photon resonances between quantum-confined valence- and conduction-band states with their angular momenta different by +/- 1, where as the off- diagonal Frochlih interaction controls mainly the RHRS process.
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A. V. Baranov, Kuon Inoue, K. Toba, Akio Yamanaka, V. I. Petrov, A. V. Fedorov, "Resonance hyper-Raman and second-harmonic scattering by semiconductor quantum dots embedded in a dielectric medium", Proc. SPIE 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials, (10 June 1996); doi: 10.1117/12.242144; http://dx.doi.org/10.1117/12.242144
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KEYWORDS
Cadmium sulfide

Scattering

Radon

Absorption

Quantum dots

Signal processing

Aluminum

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