Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Strong forward-backward asymmetry of stimulated Raman scattering in lithium-niobate-based whispering gallery resonators

 
: Leidinger, Markus; Sturman, Boris; Buse, Karsten; Breunig, Ingo

:

Optics Letters 41 (2016), No.12, pp.2823-2826
ISSN: 0146-9592
English
Journal Article
Fraunhofer IPM ()
optical resonators; lithium niobate; nonlinear optical materials; whispering gallery resonators; stimulated Raman scattering

Abstract
We show experimentally and prove theoretically that the pump-power thresholds of stimulated Raman scattering (SRS) in lithium-niobate-based whispering gallery resonators (WGRs) are strongly different for the signal waves propagating in the backward and forward directions with respect to the pump wave. This feature is due to a strong polaritonic effect. It leads to a cascade of alternating forward-backward Raman lines with increasing pump power. The measured polarization and spectral properties of SRS are in good agreement with theory. Similar properties have to be inherent in other WGRs made of polar crystals.

: http://publica.fraunhofer.de/documents/N-397655.html