TY - JOUR
T1 - Subwavelength focusing using a hyperbolic medium with a single slit
AU - Li, Guixin
AU - Li, Jensen
AU - Cheah, Kok Wai
PY - 2011/11/1
Y1 - 2011/11/1
N2 - A hyperbolic dispersion medium with a planar surface that can be used for subwavelength focusing is proposed. By combining the hyperbolic medium in a single slit with diffraction limit width, a laser beam could be focused to a subwavelength spot in the near field. Compared to a conventional superlens, the subdiffraction focusing in this work has higher optical throughput. Using a planar hyperbolic medium, which is actually alternating silver/dielectric multilayers, we showed that the focusing resolution of the designed device is down to ∼λ=5 using green light illumination (at a wavelength of 514.5nm). © 2011 Optical Society of America.
AB - A hyperbolic dispersion medium with a planar surface that can be used for subwavelength focusing is proposed. By combining the hyperbolic medium in a single slit with diffraction limit width, a laser beam could be focused to a subwavelength spot in the near field. Compared to a conventional superlens, the subdiffraction focusing in this work has higher optical throughput. Using a planar hyperbolic medium, which is actually alternating silver/dielectric multilayers, we showed that the focusing resolution of the designed device is down to ∼λ=5 using green light illumination (at a wavelength of 514.5nm). © 2011 Optical Society of America.
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U2 - 10.1364/AO.50.000G27
DO - 10.1364/AO.50.000G27
M3 - RGC 21 - Publication in refereed journal
SN - 1559-128X
VL - 50
JO - Applied Optics
JF - Applied Optics
IS - 31
ER -