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- Scopus: eid_2-s2.0-84908032825
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Article: Whispering-gallery mode lasing from optically free-standing InGaN microdisks
| Title | Whispering-gallery mode lasing from optically free-standing InGaN microdisks |
|---|---|
| Authors | |
| Issue Date | 2014 |
| Publisher | Optical 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? |
| Abstract | Optically 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 Identifier | http://hdl.handle.net/10722/202852 |
| ISSN | 2021 Impact Factor: 3.560 2020 SCImago Journal Rankings: 1.524 |
| ISI Accession Number ID |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Zhang, X | - |
| dc.contributor.author | Cheung, YF | - |
| dc.contributor.author | Zhang, Y | - |
| dc.contributor.author | Choi, HW | - |
| dc.date.accessioned | 2014-09-19T10:08:25Z | - |
| dc.date.available | 2014-09-19T10:08:25Z | - |
| dc.date.issued | 2014 | - |
| dc.identifier.citation | Optics Letters, 2014, v. 39 n. 19, p. 5614-5617 | - |
| dc.identifier.issn | 0146-9592 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/202852 | - |
| dc.description.abstract | Optically 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.language | eng | - |
| dc.publisher | Optical Society of America. The Journal's web site is located at http://www.opticsinfobase.org/current.cfm?journal=3 | - |
| dc.relation.ispartof | Optics Letters | - |
| dc.rights | Optics Letters. Copyright © Optical Society of America. | - |
| dc.title | Whispering-gallery mode lasing from optically free-standing InGaN microdisks | - |
| dc.type | Article | - |
| dc.identifier.email | Cheung, YF: yukfaira@hku.hk | - |
| dc.identifier.email | Choi, HW: hwchoi@eee.hku.hk | - |
| dc.identifier.authority | Choi, HW=rp00108 | - |
| dc.identifier.doi | 10.1364/OL.39.005614 | - |
| dc.identifier.scopus | eid_2-s2.0-84908032825 | - |
| dc.identifier.hkuros | 236777 | - |
| dc.identifier.volume | 39 | - |
| dc.identifier.issue | 19 | - |
| dc.identifier.spage | 5614 | - |
| dc.identifier.epage | 5617 | - |
| dc.identifier.isi | WOS:000343906400037 | - |
| dc.publisher.place | United States | - |
| dc.identifier.issnl | 0146-9592 | - |