Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters

The unique emission properties of single-walled carbon nanotubes are attractive for achieving increased functionality in integrated photonics. In addition to being room-temperature telecom-band emitters that can be directly grown on silicon, they are ideal for coupling to nanoscale photonic structur...

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Main Authors:	Miura, R., Imamura, S., Ohta, R., Ishii, A., Liu, X., Shimada, T., Iwamoto, S., Arakawa, Y., Kato, Y. K.
Format:	Online
Language:	English
Published:	Nature Pub. Group 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4263150/

id	pubmed-4263150
recordtype	oai_dc
spelling	pubmed-42631502014-12-16 Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters Miura, R. Imamura, S. Ohta, R. Ishii, A. Liu, X. Shimada, T. Iwamoto, S. Arakawa, Y. Kato, Y. K. Article The unique emission properties of single-walled carbon nanotubes are attractive for achieving increased functionality in integrated photonics. In addition to being room-temperature telecom-band emitters that can be directly grown on silicon, they are ideal for coupling to nanoscale photonic structures. Here we report on high-efficiency coupling of individual air-suspended carbon nanotubes to silicon photonic crystal nanobeam cavities. Photoluminescence images of dielectric- and air-mode cavities reflect their distinctly different mode profiles and show that fields in the air are important for coupling. We find that the air-mode cavities couple more efficiently, and estimated spontaneous emission coupling factors reach a value as high as 0.85. Our results demonstrate advantages of ultralow mode-volumes in air-mode cavities for coupling to low-dimensional nanoscale emitters. Nature Pub. Group 2014-11-25 /pmc/articles/PMC4263150/ /pubmed/25420679 http://dx.doi.org/10.1038/ncomms6580 Text en Copyright © 2014, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Miura, R. Imamura, S. Ohta, R. Ishii, A. Liu, X. Shimada, T. Iwamoto, S. Arakawa, Y. Kato, Y. K.
spellingShingle	Miura, R. Imamura, S. Ohta, R. Ishii, A. Liu, X. Shimada, T. Iwamoto, S. Arakawa, Y. Kato, Y. K. Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters
author_facet	Miura, R. Imamura, S. Ohta, R. Ishii, A. Liu, X. Shimada, T. Iwamoto, S. Arakawa, Y. Kato, Y. K.
author_sort	Miura, R.
title	Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters
title_short	Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters
title_full	Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters
title_fullStr	Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters
title_full_unstemmed	Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters
title_sort	ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters
description	The unique emission properties of single-walled carbon nanotubes are attractive for achieving increased functionality in integrated photonics. In addition to being room-temperature telecom-band emitters that can be directly grown on silicon, they are ideal for coupling to nanoscale photonic structures. Here we report on high-efficiency coupling of individual air-suspended carbon nanotubes to silicon photonic crystal nanobeam cavities. Photoluminescence images of dielectric- and air-mode cavities reflect their distinctly different mode profiles and show that fields in the air are important for coupling. We find that the air-mode cavities couple more efficiently, and estimated spontaneous emission coupling factors reach a value as high as 0.85. Our results demonstrate advantages of ultralow mode-volumes in air-mode cavities for coupling to low-dimensional nanoscale emitters.
publisher	Nature Pub. Group
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4263150/
_version_	1613166442198335488

Ultralow mode-volume photonic crystal nanobeam cavities for high-efficiency coupling to individual carbon nanotube emitters

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