Highly efficient and broadband wide-angle Holography Using Patch-Dipole Nano-antenna Reflectarrays

Seminar
Speaker
Jacob (Koby) Scheuer
Date
19/03/2014 - 14:00Add to Calendar 2014-03-19 14:00:00 2014-03-19 14:00:00 Highly efficient and broadband wide-angle Holography Using Patch-Dipole Nano-antenna Reflectarrays We demonstrate wide-angle, broadband and efficient reflection holography by utilizing coupled dipole-patch nano-antenna cells to impose an arbitrary phase profile on of the reflected light. High fidelity images were projected at angles of 450 and 200 with respect to the impinging light with efficiencies ranging between 40%-50% over an optical bandwidth exceeding 180nm. Excellent agreement with the theoretical predictions was found at a wide spectral range.  The demonstration of such reflectarrays opens new avenues towards expanding the limits of large angle holography. seminar room on the 9th floor of the Nanobuilding המחלקה לפיזיקה physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
seminar room on the 9th floor of the Nanobuilding
Abstract

We demonstrate wide-angle, broadband and efficient reflection holography by utilizing coupled dipole-patch nano-antenna cells to impose an arbitrary phase profile on of the reflected light. High fidelity images were projected at angles of 450 and 200 with respect to the impinging light with efficiencies ranging between 40%-50% over an optical bandwidth exceeding 180nm. Excellent agreement with the theoretical predictions was found at a wide spectral range.  The demonstration of such reflectarrays opens new avenues towards expanding the limits of large angle holography.

תאריך עדכון אחרון : 11/03/2014