Experimental quantification of surface optical nonlinearity in GaP nanopillar waveguides
2015 (English)In: Optics Express, ISSN 1094-4087, Vol. 23, no 2, 756-764 p.Article in journal (Refereed) Published
We report on surface second-order optical nonlinearity in single GaP nanopillars (nanowaveguides). The relative contribution of optical nonlinearity from the surface and the bulk is resolved by mode confinement analysis and polarization measurements. By investigating the thickness of nonlinear region at the surface of nanopillars, we estimated the nonlinear coefficient to be similar to 15 times higher at the surface with respect to the bulk. The presented results are interesting both from the fundamental aspects of light-matter interaction and for future nonlinear nanophotonic devices with smaller footprint.
Place, publisher, year, edition, pages
2015. Vol. 23, no 2, 756-764 p.
Gallium alloys, Nanostructures, Confinement analysis, Light-matter interactions, Nanophotonic devices, Nonlinear coefficient, Optical nonlinearity, Polarization measurements, Relative contribution, Second order optical nonlinearity
Nano Technology Atom and Molecular Physics and Optics
Research subject Physics; Materials Science and Engineering
IdentifiersURN: urn:nbn:se:kth:diva-155198DOI: 10.1364/OE.23.000756ISI: 000349166100016ScopusID: 2-s2.0-84921719961OAI: oai:DiVA.org:kth-155198DiVA: diva2:760115
FunderSwedish Research Council, 349-2007-8664Swedish Research Council, 621-2013-5811EU, FP7, Seventh Framework Programme, 248855
QC 20150312. Updated from manuscript to article in journal.2014-11-032014-11-032015-03-12Bibliographically approved