TY - JOUR
T1 - Controlling the resonance of a photonic crystal microcavity by a near-field probe
AU - Koenderink, A. Femius
AU - Kafesaki, Maria
AU - Buchler, Ben C.
AU - Sandoghdar, Vahid
PY - 2005/10/7
Y1 - 2005/10/7
N2 - We demonstrate theoretically that the resonance frequencies of high-Q microcavities in two-dimensional photonic crystal membranes can be tuned over a wide range by introducing a subwavelength dielectric tip into the cavity mode. Three-dimensional finite-difference time-domain simulations show that by varying the lateral and vertical positions of the tip, it is possible to tune the resonator frequency without lowering the quality factor. Excellent agreement with a perturbative theory is obtained, showing that the tuning range is limited by the ratio of the cavity mode volume to the effective polarizability of the nanoperturber.
AB - We demonstrate theoretically that the resonance frequencies of high-Q microcavities in two-dimensional photonic crystal membranes can be tuned over a wide range by introducing a subwavelength dielectric tip into the cavity mode. Three-dimensional finite-difference time-domain simulations show that by varying the lateral and vertical positions of the tip, it is possible to tune the resonator frequency without lowering the quality factor. Excellent agreement with a perturbative theory is obtained, showing that the tuning range is limited by the ratio of the cavity mode volume to the effective polarizability of the nanoperturber.
UR - http://www.scopus.com/inward/record.url?scp=28844444656&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.95.153904
DO - 10.1103/PhysRevLett.95.153904
M3 - Article
SN - 0031-9007
VL - 95
JO - Physical Review Letters
JF - Physical Review Letters
IS - 15
M1 - 153904
ER -