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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 2 — Jan. 15, 2006
  • pp: 271–273

Room-temperature slow light with semiconductor quantum-dot devices

Hui Su and Shun Lien Chuang  »View Author Affiliations


Optics Letters, Vol. 31, Issue 2, pp. 271-273 (2006)
http://dx.doi.org/10.1364/OL.31.000271


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Abstract

We demonstrate room-temperature slow light that is electrically and optically controllable by using a quantum-dot (QD) semiconductor optical amplifier (SOA) at zero and low bias below the transparency current. The absorption spectrum of the QD SOA exhibits a spectral dip with a corresponding group-index dispersion and group delay owing to coherent population oscillation caused by the interaction of pump and probe laser light near resonance of the first heavy-hole–conduction-state transition. At an optical pump power of 0.3 mW inside the single-mode waveguide without current injection, a group-index change of 3.0 with a bandwidth of 2 GHz was measured. This group-index change can be controlled by injection of electrical current and by changing the optical pump power.

© 2006 Optical Society of America

OCIS Codes
(230.1150) Optical devices : All-optical devices
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Quantum Optics

Citation
Hui Su and Shun Lien Chuang, "Room-temperature slow light with semiconductor quantum-dot devices," Opt. Lett. 31, 271-273 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-2-271


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References

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