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Bragg resonance‐enhanced coherent anti‐Stokes Raman scattering in a planar photonic band‐gap waveguide
Author(s) -
Konorov S. O.,
Akimov D. A.,
Naumov A. N.,
Fedotov A. B.,
Miles R. B.,
Haus J. W.,
Zheltikov A. M.
Publication year - 2002
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.934
Subject(s) - waveguide , materials science , raman scattering , optics , photonics , picosecond , raman spectroscopy , laser , grating , band gap , optoelectronics , fiber bragg grating , planar , group velocity , resonance (particle physics) , guided mode resonance , photonic crystal , diffraction grating , physics , computer graphics (images) , particle physics , computer science
Abstract A planar periodically corrugated waveguide, consisting of a grating and a mirror and integrating a hollow waveguide and a photonic band‐gap structure into a single compact optical element, is shown to enhance coherent anti‐Stokes Raman scattering (CARS) in molecular nitrogen. Cross‐correlation measurements, intended to visualize group‐delay effects in the photonic band‐gap waveguide and performed with picosecond Nd : YAG laser pulses, and also the measured dependence of CARS efficiency on the thickness of the waveguide layer, indicate that CARS enhancement under these conditions is at least partially due to the decrease in the group velocity of pump pulses around the photonic band gap. Copyright © 2002 John Wiley & Sons, Ltd.