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Photonic molecules with a tunable inter-cavity gap

Siegle, Tobias 1; Schierle, Stefan 1; Kraemmer, Sarah 1; Richter, Benjamin 2; Wondimu, Sentayehu F. 3,4; Schuch, Peter 4; Koos, Christian 3,4; Kalt, Heinz 1
1 Institut für Angewandte Physik (APH), Karlsruher Institut für Technologie (KIT)
2 Zoologisches Institut (ZOO), Karlsruher Institut für Technologie (KIT)
3 Institut für Photonik und Quantenelektronik (IPQ), Karlsruher Institut für Technologie (KIT)
4 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

Abstract:

Optical micro-resonators have broad applications. They are used, for example, to enhance light–matter interactions in optical sensors or as model systems for investigating fundamental physical mechanisms in cavity quantum electrodynamics. Coupling two or more micro-cavities is particularly interesting as it enlarges the design freedom and the field of application. In this context, achieving tunability of the coupling strength and hence the inter-cavity gap is of utmost importance for adjusting the properties of the coupled micro-resonator system. In this paper, we report on a novel coupling approach that allows highly precise tuning of the coupling gap of polymeric micro-resonators that are fabricated side by side on a common substrate. We structure goblet-shaped whispering-gallery-mode resonators on an elastic silicone-based polymer substrate by direct laser writing. The silicone substrate is mechanically stretched in order to exploit the lateral shrinkage to reduce the coupling gap. Incorporating a laser dye into the micro-resonators transforms the cavities into micro-lasers that can be pumped optically. We have investigated the lasing emission by micro-photoluminescence spectroscopy, focusing on the spatial localization of the modes. ... mehr


Volltext §
DOI: 10.5445/IR/1000071003
Originalveröffentlichung
DOI: 10.1038/lsa.2016.224
Scopus
Zitationen: 47
Web of Science
Zitationen: 39
Dimensions
Zitationen: 43
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Institut für Mikrostrukturtechnik (IMT)
Institut für Photonik und Quantenelektronik (IPQ)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Zoologisches Institut (ZOO)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 2047-7538
urn:nbn:de:swb:90-710036
KITopen-ID: 1000071003
HGF-Programm 47.02.07 (POF III, LK 01) Zellpopul.auf Biofunk.Oberflächen IMT
Erschienen in Light
Verlag Springer Nature [academic journals on nature.com]
Band 6
Heft 3
Seiten Art. Nr.: e16224
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 07.09.2016
Schlagwörter coupled resonators; photonic molecules; micro-lasers; tunable coupling gap; whispering gallery mode resonators
Nachgewiesen in Dimensions
Web of Science
Scopus
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