Direct birefringence and transmission modulation via dynamic alignment of P3HT nanofibers in an advanced opto-fluidic component
2017 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 7, no 1, 52-61 p.Article in journal (Refereed) Published
Poly-3-hexylthiophene (P3HT) nanofibers are semiconducting high-aspect ratio nanostructures with anisotropic absorption and birefringence properties found at different regions of the optical spectrum. In addition, P3HT nanofibers possess an ability to be aligned by an external electric field, while being dispersed in a liquid. In this manuscript we show that such collective ordering of nanofibers, similar to liquid crystal material, significantly changes the properties of transmitted light. With a specially fabricated opto-fluidic component, we monitored the phase and transmission modulation of light propagating through the solution of P3HT nanofibers, being placed in the electric field with strength up to 0.1 V/mu m. This report describes a technique for light modulation, which can be implemented in optical fiber-based devices or on-chip integrated components.
Place, publisher, year, edition, pages
Optical Society of America, 2017. Vol. 7, no 1, 52-61 p.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-202445DOI: 10.1364/OME.7.000052ISI: 000392205600007ScopusID: 2-s2.0-85008157720OAI: oai:DiVA.org:kth-202445DiVA: diva2:1078708
FunderSwedish Research Council, VR-SRL 2012-4421Swedish Research Council, VR-SRL 2013-6780Swedish Foundation for Strategic Research , EM11-0002
QC 201703062017-03-062017-03-062017-03-06Bibliographically approved