A novel mechanism for active directional beaming by mechanical actuation of double-sided plasmonic surface gratings is proposed. It is shown that the asymmetric mechanical actuation of optimally designed plasmonic surface gratings surrounding a subwavelength metal slit can produce a steerable off-axis beaming effect. The controllability of the beam direction provides an opportunity to develop novel active plasmonic devices and systems.
© 2013 Optical Society of America
Diffraction and Gratings
Original Manuscript: April 23, 2013
Revised Manuscript: July 17, 2013
Manuscript Accepted: August 28, 2013
Published: September 23, 2013
Eui-Young Song, Hwi Kim, Woo Young Choi, and Byoungho Lee, "Active directional beaming by mechanical actuation of double-sided plasmonic surface gratings," Opt. Lett. 38, 3827-3829 (2013)