Near-field visualization of light confinement in a photonic crystal microresonator.
By using scanning near-field optical microscopy, we directly map the subwavelength confinement of light around a point defect in a two-dimensional photonic crystal microresonator. Comparison of our results with the outcome of three-dimensional finite-difference time domain calculations allows us to identify small imperfections in the structure that result in the spatial modification of the intensity distribution.
Kramper
Patrick
P
Centre Nationale de la Recherche Scientifique, Laboratoire de Photonique et de Nanostructures, Route de Nozay, 91460 Marcoussis, France.
Kafesaki
Maria
M
Soukoulis
Costas M
CM
Birner
Albert
A
Müller
Frank
F
Gösele
Ulrich
U
Wehrspohn
Ralf B
RB
Mlynek
Jürgen
J
Sandoghdar
Vahid
V