Graphene-contact electrically driven microdisk lasers

Collection with item attached
2012
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/479662.do
DOI
10.1038/ncomms2137
Title
Graphene-contact electrically driven microdisk lasers
Description
We thank Professor Y.-H. Lee, Dr K.-Y. Jeong and Y.-S. No for preparingsamples. This work was supported by the National Research Foundation ofKorea grant funded by the Korea government (NRF/MEST; Grant no.2012-0000242).
abstract
Active nanophotonic devices are attractive due to their low-power consumption, ultrafast modulation speed and high-density integration. Although electrical operation is required for practical implementation of these devices, it is not straightforward to introduce a proper current path into such a wavelength-scale nanostructure without affecting the optical properties. For example, to demonstrate electrically driven nanolasers, complicated fabrication techniques have been used thus far. Here we report an electrically driven microdisk laser using a transparent graphene electrode. Current is injected efficiently through the graphene sheet covering the top surface of the microdisk cavity, and, for the first time, lasing operation was achieved with a low-threshold current of similar to 300 mu A at room temperature. In addition, we measured significant electroluminescence from a graphene-contact subwavelength-scale single nanopillar structure. This work represents a new paradigm for the practical applications of integrated photonic systems, by conformally mounting graphene on the complex surfaces of non-planar three-dimensional nanostructures.
provenance
Made available in Cube on 2018-09-28T13:05:28Z (GMT). No. of bitstreams: 0
language
English
author
Kim, Yoon-Ho
Kwon, Soon-Hong
Lee, Jung Min
Hwang, Min-Soo
Kang, Ju-Hyung
Park, Won Il
Park, Hong-Gyu
orcid
Park, Won Il/0000-0001-8312-4815; Kwon, Soonhong/0000-0002-0693-1557
accessioned
2018-09-28T13:05:28Z
available
2018-09-28T13:05:28Z
issued
2012
citation
NATURE COMMUNICATIONS(3)
issn
2041-1723
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/479662.do
Funder
교육과학기술부
Funding Program
2단계연구중심대학육성(0.5)
Project ID
1345196533
Jurisdiction
Rep.of Korea
Project Name
Initiative for Global Leaders in Physics
rights
openAccess
type
article


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