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; Sergei G. Romanov

doi:10.1364/OL.34.001519

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, Sergei G. Romanov

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

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/cm²onset 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.

Original language	English (US)
Pages (from-to)	1519-1521
Number of pages	3
Journal	Optics Letters
Volume	34
Issue number	10
DOIs	https://doi.org/10.1364/OL.34.001519
State	Published - May 15 2009

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Resonance amplification of defect emission in ZnO-inverted opal",

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/cm2onset 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.",

author = "Worawut Khunsin and Michael Scharrer and Aagesen, {Larry K.} and Anderson, {Mark A.} and Chang, {Robert P.H.} and Torres, {Clivia M.Sotomayor} and Romanov, {Sergei G.}",

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T1 - Resonance amplification of defect emission in ZnO-inverted opal

AU - Khunsin, Worawut

AU - Scharrer, Michael

AU - Aagesen, Larry K.

AU - Anderson, Mark A.

AU - Chang, Robert P.H.

AU - Torres, Clivia M.Sotomayor

AU - Romanov, Sergei G.

PY - 2009/5/15

Y1 - 2009/5/15

N2 - 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/cm2onset 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.

AB - 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/cm2onset 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.

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Resonance amplification of defect emission in ZnO-inverted opal

Abstract

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