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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 16 — Aug. 12, 2013
  • pp: 18680–18688

Integration, photostability and spontaneous emission rate enhancement of colloidal PbS nanocrystals for Si-based photonics at telecom wavelengths

Markus Humer, Romain Guider, Wolfgang Jantsch, and Thomas Fromherz  »View Author Affiliations


Optics Express, Vol. 21, Issue 16, pp. 18680-18688 (2013)
http://dx.doi.org/10.1364/OE.21.018680


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Abstract

We experimentally investigate PbS nanocrystal (NC) photoluminescence (PL) coupled to all-integrated Si-based ring resonators and waveguides at telecom wavelengths. Dissolving the NCs into Novolak polymer significantly improves their stability in ambient atmosphere. Polymer-NC blends of various NC concentrations can be applied to and removed from the same device. For NC concentrations up to 4vol%, the spontaneous emission rate into ring-resonator modes is enhanced by a factor of ~13 with respect to that into a straight waveguide. The PL intensity shows a linear dependence on the excitation intensity up to 1.64kW/cm2 and stable quality factors of ~2500.

© 2013 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Integrated Optics

History
Original Manuscript: May 3, 2013
Revised Manuscript: June 12, 2013
Manuscript Accepted: June 12, 2013
Published: July 30, 2013

Citation
Markus Humer, Romain Guider, Wolfgang Jantsch, and Thomas Fromherz, "Integration, photostability and spontaneous emission rate enhancement of colloidal PbS nanocrystals for Si-based photonics at telecom wavelengths," Opt. Express 21, 18680-18688 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-16-18680


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