Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박원일 | - |
dc.date.accessioned | 2019-11-21T07:33:12Z | - |
dc.date.available | 2019-11-21T07:33:12Z | - |
dc.date.issued | 2017-03 | - |
dc.identifier.citation | NANO LETTERS, v. 17, no. 3, page. 1892-1898 | en_US |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.issn | 1530-6992 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acs.nanolett.6b05207 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/113296 | - |
dc.description.abstract | Unique features of graphene have motivated the development of graphene-integrated photonic devices. In particular, the electrical tunability of graphene loss enables high-speed modulation of light and tuning of cavity resonances in graphene-integrated waveguides and cavities. However, efficient control of light emission such as lasing, using graphene, remains a challenge. In this work, we demonstrate on/off switching of single- and double-cavity photonic crystal lasers by electrical gating of a monolayer graphene sheet on top of photonic crystal cavities. The optical loss of graphene was controlled by varying the gate voltage V-g, with the ion gel atop the graphene sheet. First, the fundamental properties of graphene were investigated through the transmittance measurement and numerical simulations. Next, optically pumped lasing was demonstrated for a graphene-integrated single photonic crystal cavity at V-g below-0.6 V, exhibiting a low lasing threshold of -4801 mu W, whereas lasing was not observed at V-g above -0.6 V owing to the intrinsic optical loss of graphene. Changing quality factor of the graphene-integrated photonic crystal cavity enables or disables the lasing operation. Moreover, in the double-cavity photonic crystal lasers with graphene, switching of individual cavities with separate graphene sheets was achieved, and these two lasing actions were controlled independently despite the close distance of -2.2 mu m between adjacent cavities. We believe that our simple and practical approach for switching in graphene-integrated active photonic devices will pave the way toward designing high-contrast and ultracompact photonic integrated circuits. | en_US |
dc.description.sponsorship | H.-G.P. acknowledges support from the National Research Foundation of Korea (NRF) Grant funded by the Korean government (MSIP) (2009-0081565 and 2014M3A6B3063710) and Korea University Future Research Grant. W.I.P. acknowledges support from NRF Grant (NRF-2015R1A2A11001426) and M.-K.S. acknowledges support from NRF Grant (2014M3A6B3063709). | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | Graphene | en_US |
dc.subject | photonic crystals | en_US |
dc.subject | nanolasers | en_US |
dc.subject | switching | en_US |
dc.title | Switching of Photonic Crystal Lasers by Graphene | en_US |
dc.type | Article | en_US |
dc.relation.no | 3 | - |
dc.relation.volume | 17 | - |
dc.identifier.doi | 10.1021/acs.nanolett.6b05207 | - |
dc.relation.page | 1892-1898 | - |
dc.relation.journal | NANO LETTERS | - |
dc.contributor.googleauthor | Hwang, Min-Soo | - |
dc.contributor.googleauthor | Kim, Ha-Reem | - |
dc.contributor.googleauthor | Kim, Kyoung-Ho | - |
dc.contributor.googleauthor | Jeong, Kwang-Yong | - |
dc.contributor.googleauthor | Park, Jin-Sung | - |
dc.contributor.googleauthor | Choi, Jae-Hyuck | - |
dc.contributor.googleauthor | Kang, Ju-Hyung | - |
dc.contributor.googleauthor | Lee, Jung Min | - |
dc.contributor.googleauthor | Park, Won Il | - |
dc.contributor.googleauthor | Song, Jung-Hwan | - |
dc.relation.code | 2017000573 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | wipark | - |
dc.identifier.researcherID | A-8362-2013 | - |
dc.identifier.orcid | http://orcid.org/0000-0001-8312-4815 | - |
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