
Proceedings Paper
Mechanisms universally permitting hyper-Rayleigh scatteringFormat | Member Price | Non-Member Price |
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Paper Abstract
Hyper-Rayleigh scattering (HRS) is an incoherent variant of second harmonic generation. The theory involves terms of
increasing order of optical nonlinearity: for molecules or unit cells that are centrosymmetric, and which accordingly lack
even-order susceptibilities, HRS is often regarded as formally forbidden. However, for the three-photon interaction, theory
based on the standard electric dipole approximation, represented as E13, does not include the detail required to describe
what is observed experimentally, in the absence of a static field. New results emerge upon extending the theory to include
E12E2 and E12M1, incorporating one electric quadrupolar or magnetic dipolar interaction respectively. Both additional
interactions require the deployment of higher orders in the multipole expansion to govern these processes, with the E12E2
interaction analogous in rank and parity to a four-wave susceptibility. A key feature of the present work is its foundation
upon a formal tensor derivation which does not oversimplify the molecular components, yet leads to results whose
interpretation can be correlated with experimental observations. Results are summarized for the perpendicular detection
of both parallel and perpendicular polarizations. Using such methods to investigate molecular systems that might have
useful nonlinear characteristics, HRS therefore provides a route to data with direct physical interpretation, to enable more
sophisticated design of molecules with sought optical properties.
Paper Details
Date Published: 27 February 2015
PDF: 6 pages
Proc. SPIE 9347, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV, 934711 (27 February 2015); doi: 10.1117/12.2080809
Published in SPIE Proceedings Vol. 9347:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV
Konstantin L. Vodopyanov, Editor(s)
PDF: 6 pages
Proc. SPIE 9347, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV, 934711 (27 February 2015); doi: 10.1117/12.2080809
Show Author Affiliations
Mathew D. Williams, Univ. of East Anglia (United Kingdom)
Jack S. Ford, Univ. of East Anglia (United Kingdom)
Jack S. Ford, Univ. of East Anglia (United Kingdom)
David L. Andrews, Univ. of East Anglia (United Kingdom)
Published in SPIE Proceedings Vol. 9347:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV
Konstantin L. Vodopyanov, Editor(s)
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