By Topic

Robust detection of deeply subwavelength pits in simulated optical data-storage disks using photonic jets

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options are temporarily unavailable. Please try again later.
5 Author(s)
Kong, Soon-Cheol ; Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208, USA ; Sahakian, A.V. ; Heifetz, A. ; Taflove, Allen
more authors

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2936993 

We report a means to detect deeply subwavelength pits in optical data-storage media by employing the recently observed giant backscattering perturbation phenomenon of the photonic jet. We conducted microwave experiments with dimensionally scaled-up pits and lands in a simulated optical data-storage device. These measurements were backed up by three-dimensional finite-difference time-domain computational solutions of Maxwell's equations. Results indicate that pits having a lateral area of 0.025 square wavelengths, i.e., much smaller than current BluRay™ device features, can be robustly detected with a contrast ratio approximately 28 dB greater than that provided by a lens system.

Published in:

Applied Physics Letters  (Volume:92 ,  Issue: 21 )