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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 10 — May. 15, 2009
  • pp: 1519–1521

Resonance amplification of defect emission in ZnO-inverted opal

Worawut Khunsin, Michael Scharrer, Larry K. Aagesen, Mark A. Anderson, Robert P.H. Chang, Clivia M. Sotomayor Torres, and Sergei G. Romanov  »View Author Affiliations


Optics Letters, Vol. 34, Issue 10, pp. 1519-1521 (2009)
http://dx.doi.org/10.1364/OL.34.001519


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Abstract

Transformation of broadband emission of oxygen defects in the carcass of ZnO-inverted opal into a multiple-mode amplified spontaneous emission band has been observed in the spectral interval of a photonic bandgap upon increasing excitation intensity. The mode structure has been assigned to amplification of emission coupled to resonance modes of the self-selected distributed Bragg resonator. The surprisingly low 2 W cm 2 onset of amplification has been explained by the long radiative decay time of defect states populated according to the three-level excitation scheme. The decrease of emission intensity between amplified peaks has been associated with the saturation of the ZnO defect emission.

© 2009 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(160.5293) Materials : Photonic bandgap materials
(160.5298) Materials : Photonic crystals

ToC Category:
Materials

History
Original Manuscript: February 20, 2009
Revised Manuscript: April 6, 2009
Manuscript Accepted: April 7, 2009
Published: May 8, 2009

Citation
Worawut Khunsin, Michael Scharrer, Larry K. Aagesen, Mark A. Anderson, Robert P. H. Chang, Clivia M. Sotomayor Torres, and Sergei G. Romanov, "Resonance amplification of defect emission in ZnO-inverted opal," Opt. Lett. 34, 1519-1521 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-10-1519


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