Subwavelength plasmonic lens patterned on a composite optical fiber facet for quasi-one-dimensional Bessel beam generation

Sehun Kang; Hang Eun Joe; Jongki Kim; Yoonseob Jeong; Byung Kwon Min; Kyunghwan Oh

doi:10.1063/1.3596442

Subwavelength plasmonic lens patterned on a composite optical fiber facet for quasi-one-dimensional Bessel beam generation

Sehun Kang, Hang Eun Joe, Jongki Kim, Yoonseob Jeong, Byung Kwon Min, Kyunghwan Oh

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

We demonstrate a beam shaping method by engraving plasmonic lens consisted of subwavelength slit-metallic groove structure on the cleaved end facet of a composite optical fiber. The fiber consisted of a single mode optical fiber serially concatenated with a coreless silica fiber segment to expand the beam diameter. The subwavelength slit-groove structure on a gold film was fabricated using focused ion beam milling process. Plasmonic interaction in the film generated a quasi-one-dimensional Bessel-like beam with a beam width of 0.8 μm at the focal length of 2 μm. Detailed two- and three-dimensional finite-difference time-domain analyses showed beam characteristics consistent with experimental observations.

Original language	English
Article number	241103
Journal	Applied Physics Letters
Volume	98
Issue number	24
DOIs	https://doi.org/10.1063/1.3596442
Publication status	Published - 2011 Jun 13

Bibliographical note

Funding Information:
This work was supported in part by the Brain Korea 21 Project, in part by the NRF grant funded by the MEST (Grant Nos. 2010-0018442, R15-2004-024-00000-0, F01-2009-000-10200-0, and 2009-00541).

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3596442

Cite this

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title = "Subwavelength plasmonic lens patterned on a composite optical fiber facet for quasi-one-dimensional Bessel beam generation",

abstract = "We demonstrate a beam shaping method by engraving plasmonic lens consisted of subwavelength slit-metallic groove structure on the cleaved end facet of a composite optical fiber. The fiber consisted of a single mode optical fiber serially concatenated with a coreless silica fiber segment to expand the beam diameter. The subwavelength slit-groove structure on a gold film was fabricated using focused ion beam milling process. Plasmonic interaction in the film generated a quasi-one-dimensional Bessel-like beam with a beam width of 0.8 μm at the focal length of 2 μm. Detailed two- and three-dimensional finite-difference time-domain analyses showed beam characteristics consistent with experimental observations.",

author = "Sehun Kang and Joe, {Hang Eun} and Jongki Kim and Yoonseob Jeong and Min, {Byung Kwon} and Kyunghwan Oh",

note = "Funding Information: This work was supported in part by the Brain Korea 21 Project, in part by the NRF grant funded by the MEST (Grant Nos. 2010-0018442, R15-2004-024-00000-0, F01-2009-000-10200-0, and 2009-00541).",

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AU - Kang, Sehun

AU - Joe, Hang Eun

AU - Kim, Jongki

AU - Jeong, Yoonseob

AU - Min, Byung Kwon

AU - Oh, Kyunghwan

N1 - Funding Information: This work was supported in part by the Brain Korea 21 Project, in part by the NRF grant funded by the MEST (Grant Nos. 2010-0018442, R15-2004-024-00000-0, F01-2009-000-10200-0, and 2009-00541).

PY - 2011/6/13

Y1 - 2011/6/13

N2 - We demonstrate a beam shaping method by engraving plasmonic lens consisted of subwavelength slit-metallic groove structure on the cleaved end facet of a composite optical fiber. The fiber consisted of a single mode optical fiber serially concatenated with a coreless silica fiber segment to expand the beam diameter. The subwavelength slit-groove structure on a gold film was fabricated using focused ion beam milling process. Plasmonic interaction in the film generated a quasi-one-dimensional Bessel-like beam with a beam width of 0.8 μm at the focal length of 2 μm. Detailed two- and three-dimensional finite-difference time-domain analyses showed beam characteristics consistent with experimental observations.

AB - We demonstrate a beam shaping method by engraving plasmonic lens consisted of subwavelength slit-metallic groove structure on the cleaved end facet of a composite optical fiber. The fiber consisted of a single mode optical fiber serially concatenated with a coreless silica fiber segment to expand the beam diameter. The subwavelength slit-groove structure on a gold film was fabricated using focused ion beam milling process. Plasmonic interaction in the film generated a quasi-one-dimensional Bessel-like beam with a beam width of 0.8 μm at the focal length of 2 μm. Detailed two- and three-dimensional finite-difference time-domain analyses showed beam characteristics consistent with experimental observations.

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Subwavelength plasmonic lens patterned on a composite optical fiber facet for quasi-one-dimensional Bessel beam generation

Abstract

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