Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate
The optical properties of hexagonal GaN microdisk arrays grown on sapphire substrates by selective area growth (SAG) technique were investigated both experimentally and theoretically. Whispering-gallery-mode (WGM) lasing is observed from various directions of the GaN pyramids collected at room tempe...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
OSA Publishing
2019
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| Online Access: | https://eprints.nottingham.ac.uk/57056/ |
| _version_ | 1848799426684911616 |
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| author | Jiang, Jie’an Xu, Houqiang Sheikhi, Moheb Li, Liang Yang, Zhenhai Hoo, Jason Guo, Shiping Zeng, Yuheng Guo, Wei Ye, Jichun |
| author_facet | Jiang, Jie’an Xu, Houqiang Sheikhi, Moheb Li, Liang Yang, Zhenhai Hoo, Jason Guo, Shiping Zeng, Yuheng Guo, Wei Ye, Jichun |
| author_sort | Jiang, Jie’an |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The optical properties of hexagonal GaN microdisk arrays grown on sapphire substrates by selective area growth (SAG) technique were investigated both experimentally and theoretically. Whispering-gallery-mode (WGM) lasing is observed from various directions of the GaN pyramids collected at room temperature, with the dominant lasing mode being Transverse-Electric (TE) polarized. A relaxation of compressive strain in the lateral overgrown region of the GaN microdisk is illustrated by photoluminescence (PL) mapping and Raman spectroscopy. A strong correlation between the crystalline quality and lasing behavior of the GaN microdisks was also demonstrated. |
| first_indexed | 2025-11-14T20:35:29Z |
| format | Article |
| id | nottingham-57056 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:35:29Z |
| publishDate | 2019 |
| publisher | OSA Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-570562019-07-03T07:56:39Z https://eprints.nottingham.ac.uk/57056/ Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate Jiang, Jie’an Xu, Houqiang Sheikhi, Moheb Li, Liang Yang, Zhenhai Hoo, Jason Guo, Shiping Zeng, Yuheng Guo, Wei Ye, Jichun The optical properties of hexagonal GaN microdisk arrays grown on sapphire substrates by selective area growth (SAG) technique were investigated both experimentally and theoretically. Whispering-gallery-mode (WGM) lasing is observed from various directions of the GaN pyramids collected at room temperature, with the dominant lasing mode being Transverse-Electric (TE) polarized. A relaxation of compressive strain in the lateral overgrown region of the GaN microdisk is illustrated by photoluminescence (PL) mapping and Raman spectroscopy. A strong correlation between the crystalline quality and lasing behavior of the GaN microdisks was also demonstrated. OSA Publishing 2019-05-27 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/57056/1/oe-27-11-16195.pdf Jiang, Jie’an, Xu, Houqiang, Sheikhi, Moheb, Li, Liang, Yang, Zhenhai, Hoo, Jason, Guo, Shiping, Zeng, Yuheng, Guo, Wei and Ye, Jichun (2019) Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate. Optics Express, 27 (11). pp. 16195-16205. ISSN 1094-4087 https://www.osapublishing.org/oe/abstract.cfm?uri=oe-27-11-16195 doi:10.1364/OE.27.016195 doi:10.1364/OE.27.016195 |
| spellingShingle | Jiang, Jie’an Xu, Houqiang Sheikhi, Moheb Li, Liang Yang, Zhenhai Hoo, Jason Guo, Shiping Zeng, Yuheng Guo, Wei Ye, Jichun Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate |
| title | Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate |
| title_full | Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate |
| title_fullStr | Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate |
| title_full_unstemmed | Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate |
| title_short | Omnidirectional whispering-gallery-mode lasing in GaN microdisk obtained by selective area growth on sapphire substrate |
| title_sort | omnidirectional whispering-gallery-mode lasing in gan microdisk obtained by selective area growth on sapphire substrate |
| url | https://eprints.nottingham.ac.uk/57056/ https://eprints.nottingham.ac.uk/57056/ https://eprints.nottingham.ac.uk/57056/ |