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Type: Journal article
Title: IR-stimulated visible fluorescence in pink and brown diamond
Author: Byrne, K.
Chapman, J.
Luiten, A.
Citation: Journal of Physics: Condensed Matter, 2014; 26(11):115504-115504
Publisher: IOP Publishing
Issue Date: 2014
ISSN: 0953-8984
Organisation: Institute for Photonics & Advanced Sensing (IPAS)
Statement of
K S Byrne, J G Chapman and A N Luiten
Abstract: Irradiation of natural pink and brown diamond by middle-ultraviolet light (photon energy epsilon ≥ 4.1 eV) is seen to induce anomalous fluorescence phenomena at N3 defect centres (structure N3−V). When diamonds primed in this fashion are subsequently exposed to infrared light (even with a delay of many hours), a transient burst of blue N3 fluorescence is observed. The dependence of this IR-triggered fluorescence on pump wavelength and intensity suggest that this fluorescence phenomena is intrinsically related to pink diamond photochromism. An energy transfer process between N3 defects and other defect species can account for both the UV-induced fluorescence intensity changes, and the apparent optical upconversion of IR light. From this standpoint, we consider the implications of this N3 fluorescence behaviour for the current understanding of pink diamond photochromism kinetics.
Keywords: Natural diamond
impurity and defect levels
optical properties
Description: Extent: 5 p.
Rights: © 2014 IOP Publishing Ltd
DOI: 10.1088/0953-8984/26/11/115504
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Appears in Collections:Aurora harvest
IPAS publications

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