Direct measurement of the quality factor in a two-dimensional photonic-crystal microcavity.
A new microcavity design is proposed and structures are realized with a two-dimensional photonic-crystal slab. The cavity consists of seven defect holes that encompass a hexagon and is designed to reduce vertical light leakage. From a direct transmission measurement, a Q value of 816+/-30 is achieved at lambda =1.55 mum . This high- Q cavity will permit the realistic realization of spontaneous-emission modification and on-off optical switches.
S Y
SY
Lin
E
E
Chow
S G
SG
Johnson
J D
JD
Joannopoulos