30 May 2002 Four-wave scattering by phonon polaritons under excitation of small polarons in LiNbO3:Mg
Author Affiliations +
We studied the coherent four-wave scattering of light by phonon polaritons in LiNbO3:Mg crystals before and after chemical reduction, which resulted in strong increase of small polarons. Large broadening of polariton lineshape was observed in a chemically reduced lithium niobate. To explain this effect we studied optical properties of LiNbO3:Mg in the visible and IR regions, where the undoped LiNbO3 was transparent. As a result, absorption band was found, being sensitive to the chemical reduction. We assign this band to the small polaron absorption. The values of polaron shift and the mean value of frequency of optical phonos, which interact with free electrons polaron formation, were measured. Influence of small polarons on polariton k-spectra was discussed.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Galia Kh. Kitaeva, Galia Kh. Kitaeva, K. A. Kuznetsov, K. A. Kuznetsov, S. V. Solosin, S. V. Solosin, Alexander N. Penin, Alexander N. Penin, } "Four-wave scattering by phonon polaritons under excitation of small polarons in LiNbO3:Mg", Proc. SPIE 4749, ICONO 2001: Novel Trends in Nonlinear Laser Spectroscopy and Optical Diagnostics and Lasers in Chemistry, Biophysics, and Biomedicine, (30 May 2002); doi: 10.1117/12.468926; https://doi.org/10.1117/12.468926


Raman cooling in silicon photonic crystals
Proceedings of SPIE (March 07 2016)
Four-wave scattering by coherently excited polaritons
Proceedings of SPIE (February 05 1999)
Hyper-Raman scattering in CdS and ZnSe crystals
Proceedings of SPIE (September 24 1993)
Hyper-Raman effect treatment in a rutile crystal
Proceedings of SPIE (January 06 2011)
Raman and Brillouin scattering in diamond
Proceedings of SPIE (December 01 1990)

Back to Top