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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 13 — Jul. 1, 2013
  • pp: 15951–15958

Mode selection in electrically driven quantum dot microring cavities

Alexander Schlehahn, Ferdinand Albert, Christian Schneider, Sven Höfling, Stephan Reitzenstein, Jan Wiersig, and Martin Kamp  »View Author Affiliations

Optics Express, Vol. 21, Issue 13, pp. 15951-15958 (2013)

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Within this paper a novel method for selecting certain lasing modes from a whispering gallery mode (WGM) spectrum of electrically pumped microrings is presented. Selection is achieved by introducing sub-wavelength sized notches of about 50nm width and 500nm depth to the sidewalls of ring shaped quantum dot micro cavities with 80µm diameter and ridge widths below 2µm. It is shown that the notches act as scattering centers, suppressing modes that have maxima in intensity at the notch position. By a variation of the angle between the notches, different repetitive patterns of lasing modes and suppressed modes are conceivable.

© 2013 OSA

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3560) Lasers and laser optics : Lasers, ring
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.0250) Optical devices : Optoelectronics
(230.7408) Optical devices : Wavelength filtering devices
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Lasers and Laser Optics

Original Manuscript: March 25, 2013
Revised Manuscript: June 11, 2013
Manuscript Accepted: June 13, 2013
Published: June 26, 2013

Alexander Schlehahn, Ferdinand Albert, Christian Schneider, Sven Höfling, Stephan Reitzenstein, Jan Wiersig, and Martin Kamp, "Mode selection in electrically driven quantum dot microring cavities," Opt. Express 21, 15951-15958 (2013)

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