S. O. Konorov, V. P. Mitrokhin, I. V. Smirnova, A. B. Fedotov, D. A. Sidorov-Biryukov, A. M. Zheltikov, “Nonlinear-optical spectral interferometry of nanostructures using coherent anti-Stokes Raman scattering”, Kvantovaya Elektronika, 2005, Volume 35, Number 1,Pages <nobr>97

Laser applications and other topics in quantum electronics

Nonlinear-optical spectral interferometry of nanostructures using coherent anti-Stokes Raman scattering

S. O. Konorov^a, V. P. Mitrokhin^a, I. V. Smirnova^b, A. B. Fedotov^ac, D. A. Sidorov-Biryukov^c, A. M. Zheltikov^ac

^a Lomonosov Moscow State University, Faculty of Physics
^b Institut für Verfahrenstechnik, Technische Universität Berlin, Germany
^c International Laser Center of Moscow State University

Abstract: The spectrum of coherent anti-Stokes Raman scattering (CARS) from Raman-active vibrations of gas-phase nitrogen molecules in a mesoporous silica aerogel host is experimentally studied. The CARS spectral profile under these conditions is a result of interference of the resonant part of nonlinear susceptibility, originating from nitrogen molecules in aerogel pores, and the nonresonant contribution, related to the mesoporous host. Raman-active modes of gas-phase molecular nitrogen give rise to intense resonances in the CARS spectrum, serving as reference spectral profiles for probing local parameters of a nanocomposite material (nanoCARS).

PACS: 42.65.Dr, 61.46.+w

Received: 06.09.2004