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Tunable optical transmission through gold slit arrays with Z-shaped channels |
JOSA A, Vol. 28, Issue 3, pp. 441-447 (2011)
http://dx.doi.org/10.1364/JOSAA.28.000441
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Abstract
The transmission of a normally incident wave through an array of subwavelength gold film with Z-shaped slits has been explored by using the finite-difference time-domain method. The results show that the transmission of a thinner metal film perforated with a Z-shaped slit array behaves nearly the same as that of a thicker metal film perforated with straight slit array with the same central slit length, which is useful for the miniaturization of the optical device. It is also presented that the transmission of a Z-shaped slit array sensitively depends on the slit geometrical parameters. By adjusting the width and length of each section of the Z-shaped slit, noticeable magnitude modification of the transmission, redshift, and blueshift of the resonance modes is found, which is useful for the design of frequency-selective and sensor optical devices.
© 2011 Optical Society of America
OCIS Codes
(120.7000) Instrumentation, measurement, and metrology : Transmission
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: September 29, 2010
Revised Manuscript: January 15, 2011
Manuscript Accepted: January 16, 2011
Published: February 25, 2011
Citation
Suxia Xie, Hongjian Li, Xin Zhou, Haiqing Xu, and Zhimin Liu, "Tunable optical transmission through gold slit arrays with Z-shaped channels," J. Opt. Soc. Am. A 28, 441-447 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-3-441
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