Article: Lasing threshold dependence on excitation pulse duration in ZnO tetrapods

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TitleLasing threshold dependence on excitation pulse duration in ZnO tetrapods
AuthorsHsu, YF1
Leong, ESP2
Kwok, WM1
Djurišić, AB1
Yu, SF2
Phillips, DL1
Chan, WK1
KeywordsLasing
Tetrapod
ZnO
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/optmat
CitationOptical Materials, 2008, v. 31 n. 1, p. 35-38 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.optmat.2008.01.002
AbstractThe dependence of the stimulated emission from ZnO tetrapods on the excitation pulse duration was studied. In all cases, clear lasing modes with a width of 0.5-0.8 nm were observed. However, lasing thresholds were significantly different. The thresholds observed were 57 μJ/cm2, 840 μJ/cm2, and 4.2 mJ/cm2 for 250 fs, 120 ps, and 6 ns excitation pulses, respectively. The same trends (a decrease of lasing threshold with a decrease of pulse duration) are observed in samples with different tetrapod densities, although the differences become less pronounced in higher tetrapod density samples where lasing from multiple tetrapods can occur. © 2008 Elsevier B.V. All rights reserved.
ISSN0925-3467
2011 Impact Factor: 2.023
2011 SCImago Journal Rankings: 0.337
DOIhttp://dx.doi.org/10.1016/j.optmat.2008.01.002
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorHsu, YF
dc.contributor.authorLeong, ESP
dc.contributor.authorKwok, WM
dc.contributor.authorDjurišić, AB
dc.contributor.authorYu, SF
dc.contributor.authorPhillips, DL
dc.contributor.authorChan, WK
dc.date.accessioned2010-05-31T03:28:43Z
dc.date.available2010-05-31T03:28:43Z
dc.date.issued2008
dc.description.abstractThe dependence of the stimulated emission from ZnO tetrapods on the excitation pulse duration was studied. In all cases, clear lasing modes with a width of 0.5-0.8 nm were observed. However, lasing thresholds were significantly different. The thresholds observed were 57 μJ/cm2, 840 μJ/cm2, and 4.2 mJ/cm2 for 250 fs, 120 ps, and 6 ns excitation pulses, respectively. The same trends (a decrease of lasing threshold with a decrease of pulse duration) are observed in samples with different tetrapod densities, although the differences become less pronounced in higher tetrapod density samples where lasing from multiple tetrapods can occur. © 2008 Elsevier B.V. All rights reserved.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationOptical Materials, 2008, v. 31 n. 1, p. 35-38 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.optmat.2008.01.002
dc.identifier.doihttp://dx.doi.org/10.1016/j.optmat.2008.01.002
dc.identifier.epage38
dc.identifier.hkuros152371
dc.identifier.issn0925-3467
2011 Impact Factor: 2.023
2011 SCImago Journal Rankings: 0.337
dc.identifier.issue1
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-50249093232
dc.identifier.spage35
dc.identifier.urihttp://hdl.handle.net/10722/58347
dc.identifier.volume31
dc.languageeng
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/optmat
dc.publisher.placeNetherlands
dc.relation.ispartofOptical Materials
dc.relation.referencesReferences in Scopus
dc.rightsOptical Materials. Copyright © Marcel Dekker Inc.
dc.subjectLasing
dc.subjectTetrapod
dc.subjectZnO
dc.titleLasing threshold dependence on excitation pulse duration in ZnO tetrapods
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. Nanyang Technological University