Room-temperature continuous-wave indirect-bandgap transition lasing in an ultra-thin WS2 disk
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sung, Junghyun | - |
dc.contributor.author | Shin, Dongjin | - |
dc.contributor.author | Cho, HyunHee | - |
dc.contributor.author | Lee, Seong Won | - |
dc.contributor.author | Park, Seungmin | - |
dc.contributor.author | Kim, Young Duck | - |
dc.contributor.author | Moon, Jong Sung | - |
dc.contributor.author | Kim, Je-Hyung | - |
dc.contributor.author | Gong, Su-Hyun | - |
dc.date.accessioned | 2022-11-17T15:40:48Z | - |
dc.date.available | 2022-11-17T15:40:48Z | - |
dc.date.created | 2022-11-17 | - |
dc.date.issued | 2022-11 | - |
dc.identifier.issn | 1749-4885 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/145652 | - |
dc.description.abstract | Indirect-bandgap transition lasing, even under continuous-wave excitation at room temperature, is demonstrated in an ultra-thin WS2 disk. Small semiconductor lasers that can be integrated on a chip are essential for a wide range of optical applications, including optical computing, communication and sensing. Practical laser applications have only been developed with direct-bandgap materials because of a general belief that lasing action from indirect-bandgap materials is almost impossible. Here we report unexpected indirect-bandgap transition lasing in an ultra-thin WS2 disk. We demonstrate that a 50-nm-thick WS2 disk offers efficient optical gain and whispering gallery modes that are sufficient for lasing action. As a result, the WS2 disk exhibits indirect transition lasing, even under continuous-wave excitation at room temperature. Our experimental results are in close agreement with theoretical modelling for phonon-assisted photon lasing. The results derived from external cavity-free ultra-thin WS2 layers offer a new direction for van-der-Waals-material-based nanophotonics and introduce the possibility for optical devices based on indirect-bandgap materials. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.subject | OPTICAL GAIN | - |
dc.subject | SILICON | - |
dc.title | Room-temperature continuous-wave indirect-bandgap transition lasing in an ultra-thin WS2 disk | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Gong, Su-Hyun | - |
dc.identifier.doi | 10.1038/s41566-022-01085-w | - |
dc.identifier.scopusid | 2-s2.0-85139769100 | - |
dc.identifier.wosid | 000867521100003 | - |
dc.identifier.bibliographicCitation | NATURE PHOTONICS, v.16, no.11, pp.792 - + | - |
dc.relation.isPartOf | NATURE PHOTONICS | - |
dc.citation.title | NATURE PHOTONICS | - |
dc.citation.volume | 16 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 792 | - |
dc.citation.endPage | + | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Optics | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Optics | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | OPTICAL GAIN | - |
dc.subject.keywordPlus | SILICON | - |
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