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Title: Optical beam focusing by a single subwavelength metal slit surrounded by chirped dielectric surface gratings

Abstract

A method for optical beam focusing by a single subwavelength metal slit surrounded by surface gratings is proposed. In our proposed method, the period of each surface grating is chirped so that the radiation fields of surface plasmon polaritons can be controlled to make a beam spot at the desired focal length. Through our proposed method, it is numerically shown that we can make a beam spot which is located at the several times of wavelength distance from the slit, and its focal length can be controlled.

Authors:
; ; ; ;  [1]
  1. National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Gwanak-Gu Sillim-Dong, Seoul 151-774 (Korea, Republic of)
Publication Date:
OSTI Identifier:
21016265
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 92; Journal Issue: 1; Other Information: DOI: 10.1063/1.2828716; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM OPTICS; DIELECTRIC MATERIALS; DIFFRACTION GRATINGS; FOCUSING; PARTICLE BEAMS; PLASMONS; POLARONS

Citation Formats

Kim, Seyoon, Lim, Yongjun, Kim, Hwi, Park, Junghyun, and Lee, Byoungho. Optical beam focusing by a single subwavelength metal slit surrounded by chirped dielectric surface gratings. United States: N. p., 2008. Web. doi:10.1063/1.2828716.
Kim, Seyoon, Lim, Yongjun, Kim, Hwi, Park, Junghyun, & Lee, Byoungho. Optical beam focusing by a single subwavelength metal slit surrounded by chirped dielectric surface gratings. United States. doi:10.1063/1.2828716.
Kim, Seyoon, Lim, Yongjun, Kim, Hwi, Park, Junghyun, and Lee, Byoungho. Mon . "Optical beam focusing by a single subwavelength metal slit surrounded by chirped dielectric surface gratings". United States. doi:10.1063/1.2828716.
@article{osti_21016265,
title = {Optical beam focusing by a single subwavelength metal slit surrounded by chirped dielectric surface gratings},
author = {Kim, Seyoon and Lim, Yongjun and Kim, Hwi and Park, Junghyun and Lee, Byoungho},
abstractNote = {A method for optical beam focusing by a single subwavelength metal slit surrounded by surface gratings is proposed. In our proposed method, the period of each surface grating is chirped so that the radiation fields of surface plasmon polaritons can be controlled to make a beam spot at the desired focal length. Through our proposed method, it is numerically shown that we can make a beam spot which is located at the several times of wavelength distance from the slit, and its focal length can be controlled.},
doi = {10.1063/1.2828716},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 1,
volume = 92,
place = {United States},
year = {2008},
month = {1}
}