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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
2013 Impact Factor: 2.075
2013 SCImago Journal Rankings: 0.835
 
DOIhttp://dx.doi.org/10.1016/j.optmat.2008.01.002
 
ISI Accession Number IDWOS:000259731800005
 
ReferencesReferences in Scopus
 
DC FieldValue
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.isiWOS:000259731800005
 
dc.identifier.issn0925-3467
2013 Impact Factor: 2.075
2013 SCImago Journal Rankings: 0.835
 
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
 
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<contributor.author>Leong, ESP</contributor.author>
<contributor.author>Kwok, WM</contributor.author>
<contributor.author>Djuri&#353;i&#263;, AB</contributor.author>
<contributor.author>Yu, SF</contributor.author>
<contributor.author>Phillips, DL</contributor.author>
<contributor.author>Chan, WK</contributor.author>
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<description.abstract>The 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 &#956;J/cm2, 840 &#956;J/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. &#169; 2008 Elsevier B.V. All rights reserved.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. Nanyang Technological University