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Optically controlled elastic microcavities

Flatae, A. M. 1; Burresi, M.; Zeng, H.; Nocentini, S.; Wiegele, S. 1; Parmeggiani, C.; Kalt, H. 1; Wiersma, D.
1 Institut für Angewandte Physik (APH), Karlsruher Institut für Technologie (KIT)

Abstract:

Whispering gallery mode (WGM) resonators made from dielectrics like glass or polymers have outstanding optical properties like huge cavity quality (Q) factors which can be achieved on scales compatible with on-chip integration. However, tunability of these resonances is typically difficult to achieve or not suitable for robust device applications. We report here on the fabrication of polymeric micro-goblet WGM resonators with an optically controlled and stable reversible tunability over a large spectral range. This tunability is achieved by integration of photo-responsive liquid crystalline elastomers (LCEs) into micro-goblet cavities. The optical response of the elastomer allows reshaping the goblet by employing low pump power, leading to a fully reversible tuning of the modes. The structure can be realistically implemented in on-chip devices, combining the ultra-high Q factors, typical of WGM resonators, with reliable, optical tunability. This result serves as an example of how light can control light, by invoking a physical reshaping of the structure. This way of optical tuning creates interesting possibilities for all-optical control in circuits, enabling interaction between signal and control beams and the realization of self-tuning cavities.


Verlagsausgabe §
DOI: 10.5445/IR/1000048266
Originalveröffentlichung
DOI: 10.1038/lsa.2015.55
Scopus
Zitationen: 63
Web of Science
Zitationen: 60
Dimensions
Zitationen: 63
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 2047-7538, 2095-5545
urn:nbn:de:swb:90-482669
KITopen-ID: 1000048266
Erschienen in Light
Verlag Springer Nature [academic journals on nature.com]
Band 4
Heft 4
Seiten e282
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter liquid crystal elastomers; polymeric cavities; tunable micro-resonators; whispering gallery modes
Nachgewiesen in Dimensions
Scopus
Web of Science
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