Abstract
We present theoretical studies on the transmission of light through subwavelength, circular apertures surrounded by circular groove structures. Finite-difference time-domain equations in cylindrical coordinates are provided for both dispersive materials and electrical conductors. The nanohole systems are composed of a circular hole in a slab, that is encircled by sinusoidal grooves defined by a period and depth. Light transmission is found to be extremely sensitive to the hole size, groove period, and groove depth. We determine a set of groove parameters that optimize transmission. Enhancements in transmission by approximately a factor of four can be achieved for silver in the visible when compared to the light incident upon the hole. These results may find utility in the design of nanoscale light manipulating devices.
| Original language | English |
|---|---|
| Pages (from-to) | 11-18 |
| Number of pages | 8 |
| Journal | Applied Physics B: Lasers and Optics |
| Volume | 84 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Jul 2006 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy (miscellaneous)
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Finite-difference time-domain studies of light transmission through nanohole structures. / Shuford, K. L.; Ratner, Mark A; Gray, S. K.; Schatz, George C.
In: Applied Physics B: Lasers and Optics, Vol. 84, No. 1-2, 07.2006, p. 11-18.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Finite-difference time-domain studies of light transmission through nanohole structures
AU - Shuford, K. L.
AU - Ratner, Mark A
AU - Gray, S. K.
AU - Schatz, George C
PY - 2006/7
Y1 - 2006/7
N2 - We present theoretical studies on the transmission of light through subwavelength, circular apertures surrounded by circular groove structures. Finite-difference time-domain equations in cylindrical coordinates are provided for both dispersive materials and electrical conductors. The nanohole systems are composed of a circular hole in a slab, that is encircled by sinusoidal grooves defined by a period and depth. Light transmission is found to be extremely sensitive to the hole size, groove period, and groove depth. We determine a set of groove parameters that optimize transmission. Enhancements in transmission by approximately a factor of four can be achieved for silver in the visible when compared to the light incident upon the hole. These results may find utility in the design of nanoscale light manipulating devices.
AB - We present theoretical studies on the transmission of light through subwavelength, circular apertures surrounded by circular groove structures. Finite-difference time-domain equations in cylindrical coordinates are provided for both dispersive materials and electrical conductors. The nanohole systems are composed of a circular hole in a slab, that is encircled by sinusoidal grooves defined by a period and depth. Light transmission is found to be extremely sensitive to the hole size, groove period, and groove depth. We determine a set of groove parameters that optimize transmission. Enhancements in transmission by approximately a factor of four can be achieved for silver in the visible when compared to the light incident upon the hole. These results may find utility in the design of nanoscale light manipulating devices.
UR - http://www.scopus.com/inward/record.url?scp=33745712676&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33745712676&partnerID=8YFLogxK
U2 - 10.1007/s00340-006-2218-x
DO - 10.1007/s00340-006-2218-x
M3 - Article
AN - SCOPUS:33745712676
VL - 84
SP - 11
EP - 18
JO - Applied Physics B: Lasers and Optics
JF - Applied Physics B: Lasers and Optics
SN - 0946-2171
IS - 1-2
ER -