In this work, we experimentally studied sharp plasmonic resonance on gold gratings in both amplitude and phase domains using a spectroscopic ellipsometry technique. We used numerical and analytical models to analyze the phase delay of TM and TE waves under a surface plasmon excitation condition, and the calculated result fits well with the experimental observations. In addition, the ellipsometry method used here provides an important tool to characterize the phase information in plasmonic and metamaterial devices.
© 2012 Optical Society of America
Diffraction and Gratings
Original Manuscript: September 12, 2012
Revised Manuscript: October 18, 2012
Manuscript Accepted: October 21, 2012
Published: December 14, 2012
Shumei Chen, Guixin Li, Winghan Wong, Edwin Yue-Bun Pun, and Kok Wai Cheah, "Sharp plasmonic resonance on gold gratings in amplitude and phase domains," Appl. Opt. 51, 8563-8566 (2012)