Resonance amplification of defect emission in ZnO-inverted opal

Khunsin W, Scharrer M, Aagesen LK, Anderson MA, Chang RPH, Sotomayor Torres CM, Romanov SG (2009)

Publication Type: Journal article

Publication year: 2009

Journal

Optics Letters Optical Society of America

Book Volume: 34

Article Number: 1519

Journal Issue: 10

DOI: 10.1364/OL.34.001519

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.

Authors with CRIS profile

Michael Scharrer Lehrstuhl für Experimentalphysik (Alfried Krupp von Bohlen und Halbach-Professur)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

Northwestern University US United States (USA) (US) University College Cork (UCC) IE Ireland (IE) Institució Catalana de Recerca i Estudis Avançats (ICREA) / Catalan Institution for Research and Advanced Studies ES Spain (ES)

How to cite

APA:

Khunsin, W., Scharrer, M., Aagesen, L.K., Anderson, M.A., Chang, R.P.H., Sotomayor Torres, C.M., & Romanov, S.G. (2009). Resonance amplification of defect emission in ZnO-inverted opal. Optics Letters, 34(10). https://dx.doi.org/10.1364/OL.34.001519

MLA:

Khunsin, Worawut, et al. "Resonance amplification of defect emission in ZnO-inverted opal." Optics Letters 34.10 (2009).

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