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Proceedings Paper

Reflection and absorption dynamics in periodic nanostructures based on ZnS/ZnSe
Author(s): S. A. Tikhomirov; M. V. Ermolenko; V. V. Stankevich; O. V. Buganov; S. V. Gaponenko; P. I. Kuznetsov; G. G. Yakushcheva
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Paper Abstract

ZnS/ZnSe heterostructures under condition of ZnSe interband excitation by a 150 fs laser pulse exhibit strong narrow-band modification of absorption and wide-band modification of reflection. Mean decay time for nonlinear reflection in heterostructures ranges from 2 to 3 ps whereas in bare ZnSe monolayer it exceeds 5 ps. Possible physical processes responsible for nonlinear refraction in the transparency region include interplay of absorption driven nonlinear refraction via Kramers-Kronig relations and intrinsic dielectric properties of dense electron-hole plasma. For nonlinear absorption at ZnSe band edge, interplay of plasma screening effects and states filling effects are relevant.

Paper Details

Date Published: 9 July 2007
PDF: 9 pages
Proc. SPIE 6727, ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics, 672708 (9 July 2007); doi: 10.1117/12.752230
Show Author Affiliations
S. A. Tikhomirov, Institute of Molecular and Atomic Physics (Belarus)
M. V. Ermolenko, Institute of Molecular and Atomic Physics (Belarus)
V. V. Stankevich, Institute of Molecular and Atomic Physics (Belarus)
O. V. Buganov, Institute of Molecular and Atomic Physics (Belarus)
S. V. Gaponenko, Institute of Molecular and Atomic Physics (Belarus)
P. I. Kuznetsov, Institute of Radioengineering and Electronics (Russia)
G. G. Yakushcheva, Institute of Radioengineering and Electronics (Russia)


Published in SPIE Proceedings Vol. 6727:
ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics

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