Polymeric photonic molecule super-mode lasers on silicon

Tobias Grossmann; Tobias Wienhold; Uwe Bog; Torsten Beck; Christian Friedmann; Heinz Kalt; Timo Mappes

doi:10.1038/lsa.2013.38

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Polymeric photonic molecule super-mode lasers on silicon

Original Articles

- Polymeric photonic molecule super-mode lasers on silicon
- Light: Science & Applications Vol. 2, Issue 1-2, (2013)
- Affiliations：
  
  1.Institute of Applied Physics and DFG Center for Functional Nanostructures CFN, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany
  2.Institute of Microstructure Technology, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany
  3.Institute of Functional Interfaces, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany
  4.Carl Zeiss AG, Corporate Research and Technology, 07745 Jena, Germany
- Author bio：
  
  Dr T Grossmann, Institute of Applied Physics, Institute of Microstructure Technology, Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany Email: tobias.grossmann@kit.edu; URL: www.biophotonic-systems.com
  Dr T Mappes, Institute of Microstructure Technology, Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany Email: timo.mappes@kit.edu; URL: www.biophotonic-systems.com
- Funds：
- DOI：10.1038/lsa.2013.38
  CLC：
- Published：2013-06，
  
  Published Online：24 May 2013，
  
  Received：18 September 2012，
  
  Revised：03 December 2012，
  
  Accepted：26 February 2013
- Accepted：
Scan QR Code
Grossmann, T. et al. Polymeric photonic molecule super-mode lasers on silicon. Light: Science & Applications, 2, e82 (2013).
DOI：

Grossmann, T. et al. Polymeric photonic molecule super-mode lasers on silicon. Light: Science & Applications, 2, e82 (2013). DOI： 10.1038/lsa.2013.38.

摘要

Abstract

Optically coupled microcavities have emerged as photonic structures with promising properties for investigation of fundamental science as well as for applications. We report on the fabrication and spatially resolved spectroscopy of on-chip photonic molecule (PM) lasers consisting of two coupled

dye-doped polymeric microdisks on a silicon substrate. We investigate the fundamental lasing properties with focus on the spatial distribution of modes

the coupling dependent suppression of lasing modes

and in particular the application-oriented operation of these devices in aqueous environments. By depositing an additional polymer layer onto the lithographically structured cavities made of dye-doped poly(methyl methacrylate)

coupling-gap widths below 150 nm with aspect ratios of the micro-/nanostructure exceeding 9∶1 are achieved. This enables strong optical coupling at visible wavelengths despite relatively small resonator radii of 25 µm. The lasing properties of dye-doped PMs are investigated using spatially resolved micro-photoluminescence (μ-PL) spectroscopy. This technique allows for the direct imaging of whispering-gallery modes (WGMs) in the photonics molecules. For subwavelength coupling gaps

we observe lasing from delocalized eigenstates of the PMs (termed in the following as super-modes). Using size-mismatched cavities

the lasing mode suppression for different coupling-gap widths is investigated. We further demonstrate single-mode lasing operation in aqueous environments with PMs

which are realized on a low-cost

polymer-on-silicon platform.

关键词

Keywords

microcavity lasersphotonic moleculesvisible laserswhispering-gallery modes

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