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Bulk versus surface contributions in nonlinear optics of isotropic centrosymmetric media
Author(s) -
Cattaneo Stefano,
Kauranen Martti
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200562207
Subject(s) - isotropy , polarization (electrochemistry) , second harmonic generation , nonlinear system , optics , condensed matter physics , surface (topology) , harmonic , materials science , nonlinear optics , volume (thermodynamics) , physics , chemistry , thermodynamics , quantum mechanics , geometry , mathematics , laser
The relative importance of bulk and surface contributions to the second‐harmonic response of isotropic surfaces is addressed by studying the polarization properties of second‐harmonic signals generated by two noncollinear input beams. Measurements on an air‐glass interface reveal that the bulk contributions dominate in transmission but are negligible in reflection. Even when the nonlinear response has a bulk origin, it is strongly suppressed when the interaction volume is localized deep inside the bulk medium. Conversely, bulk contributions are maximized when the interaction volume is localized near the surface. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)