We present a theoretical analysis of light scattering from a layered metal–dielectric microsphere. The system consists of two spherical resonators coupled through concentric embedding. Solving for the modes of this system, we find that near an avoided crossing the scattering cross section is dramatically suppressed, exhibiting a tunable optical transparency. Similar to electromagnetically induced transparency, this phenomenon is associated with a large group delay, which in our system is manifest as flat azimuthal dispersion.
© 2007 Optical Society of America
Original Manuscript: October 30, 2006
Revised Manuscript: November 20, 2006
Manuscript Accepted: November 21, 2006
Published: January 26, 2007
Charles Rohde, Keisuke Hasegawa, and Miriam Deutsch, "Plasmon-assisted transparency in metal-dielectric microspheres," Opt. Lett. 32, 415-417 (2007)