File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Whispering-gallery mode lasing from optically free-standing InGaN microdisks

TitleWhispering-gallery mode lasing from optically free-standing InGaN microdisks
Authors
Issue Date2014
PublisherOptical Society of America. The Journal's web site is located at http://www.opticsinfobase.org/current.cfm?journal=3
Citation
Optics Letters, 2014, v. 39 n. 19, p. 5614-5617 How to Cite?
AbstractOptically pumped multi-mode whispering-gallery mode (WGM) lasing has been observed in optically free-standing InGaN/GaN quantum well microdisks at room temperature. The ∼6.6 μm optically isolated microdisks are patterned by microsphere lithography on GaN thin-films prepared by laser lift-off of the sapphire substrate, enabling superior optical confinement. The modes are determined to be of second order according to simulations. The lasing threshold is found to be ∼9.06 mJ/cm2, with a quality factor Q of ∼770 evaluated from the dominant mode at λ = 430.2 nm, and a free space range (FSR) of 3.17 to 2.16 nm, which is mode-dependent. © 2014 Optical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/202852
ISSN
2015 Impact Factor: 3.04
2015 SCImago Journal Rankings: 2.397

 

DC FieldValueLanguage
dc.contributor.authorZhang, X-
dc.contributor.authorCheung, YF-
dc.contributor.authorZhang, Y-
dc.contributor.authorChoi, HW-
dc.date.accessioned2014-09-19T10:08:25Z-
dc.date.available2014-09-19T10:08:25Z-
dc.date.issued2014-
dc.identifier.citationOptics Letters, 2014, v. 39 n. 19, p. 5614-5617-
dc.identifier.issn0146-9592-
dc.identifier.urihttp://hdl.handle.net/10722/202852-
dc.description.abstractOptically pumped multi-mode whispering-gallery mode (WGM) lasing has been observed in optically free-standing InGaN/GaN quantum well microdisks at room temperature. The ∼6.6 μm optically isolated microdisks are patterned by microsphere lithography on GaN thin-films prepared by laser lift-off of the sapphire substrate, enabling superior optical confinement. The modes are determined to be of second order according to simulations. The lasing threshold is found to be ∼9.06 mJ/cm2, with a quality factor Q of ∼770 evaluated from the dominant mode at λ = 430.2 nm, and a free space range (FSR) of 3.17 to 2.16 nm, which is mode-dependent. © 2014 Optical Society of America.-
dc.languageeng-
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsinfobase.org/current.cfm?journal=3-
dc.relation.ispartofOptics Letters-
dc.rightsOptics Letters. Copyright © Optical Society of America.-
dc.titleWhispering-gallery mode lasing from optically free-standing InGaN microdisks-
dc.typeArticle-
dc.identifier.emailCheung, YF: yukfaira@hku.hk-
dc.identifier.emailChoi, HW: hwchoi@eee.hku.hk-
dc.identifier.authorityChoi, HW=rp00108-
dc.identifier.doi10.1364/OL.39.005614-
dc.identifier.hkuros236777-
dc.identifier.volume39-
dc.identifier.issue19-
dc.identifier.spage5614-
dc.identifier.epage5617-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats