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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 10 — May. 19, 2014
  • pp: 12248–12254

Enhanced light emission from Ge quantum dots in photonic crystal ring resonator

Yong Zhang, Cheng Zeng, Danping Li, Xiangjie Zhao, Ge Gao, Jinzhong Yu, and Jinsong Xia  »View Author Affiliations

Optics Express, Vol. 22, Issue 10, pp. 12248-12254 (2014)

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Light emitter based on Ge quantum dots embedded in photonic crystal ring resonator is designed and fabricated. Six sharp resonant peaks dominate the photoluminescence (PL) spectrum ranging from 1500 to 1600 nm at room temperature. The light emission enhancement is due to Purcell effect and high collection efficiency of the PCRR verified by calculated far-field patterns. The Purcell factor of the PCRR is estimated from enhancement factor and increased collection efficiency. The linewidth of the emission of a single Ge quantum dot is estimated from the Purcell factor.

© 2014 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(140.3948) Lasers and laser optics : Microcavity devices
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: March 7, 2014
Revised Manuscript: May 4, 2014
Manuscript Accepted: May 4, 2014
Published: May 13, 2014

Yong Zhang, Cheng Zeng, Danping Li, Xiangjie Zhao, Ge Gao, Jinzhong Yu, and Jinsong Xia, "Enhanced light emission from Ge quantum dots in photonic crystal ring resonator," Opt. Express 22, 12248-12254 (2014)

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