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

Journal
Laser physics  
Volume
14
Issue
11
Start Page
1382
End Page
1385
Citation
Laser Physics 14 (11): 1382-1385 (2004-11-01)
Scopus ID
2-s2.0-10244257604
Publisher
IOP Publ.
We experimentally study the spectrum of coherent anti-Stokes Raman scattering (CARS) from Raman-active vibrations of gas-phase nitrogen molecules in a mesoporous silica aerogel host. The CARS spectral profile under these conditions is controlled by the interference of the resonant part of the nonlinear-optical susceptibility, related to nitrogen molecules in the pores of aerogel, and the nonresonant contribution, provided by the mesoporous host. Raman-active vibrations of gas-phase molecular nitrogen give rise to intense resonances in CARS spectra. These spectral profiles can serve as a local probe for measuring effective-medium parameters of nanocomposite materials (nanoCARS).
DDC Class
530: Physik