Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 22, Issue 5, Pages 311-313Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2009.2039209
Keywords
Abrupt taper; microtube; optical cavity
Funding
- Natural Sciences and Engineering Research Council of Canada [381291]
- U.S. Army Research Office [W911NF-09-1-0471]
- Fonds de recherche sur la nature et les technologies
- McGill University
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We report on the controlled transfer of single rolled-up semiconductor microtube-based optical cavities from their host substrate to a foreign one. Such microtube devices, with diameters of similar to 5 mu m, wall thicknesses of similar to 50 nm, and lengths of >100 mu m, are fabricated by selectively releasing a coherently strained InGaAs-GaAs quantum-dot layer from the handling GaAs substrate. With the use of fiber abrupt tapers inserted into two ends of the tubes, rolled-up microtubes are lifted off from the substrate and subsequently transferred, with a precisely controlled position, onto the cleaved facet of a single-mode fiber. The resulting devices exhibit strong coherent emission at room temperature and may lead to integrated micro- and nanoscale lasers with greatly simplified packaging.
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