Share Email Print
cover

Proceedings Paper

Integration and tolerance issues for resonant subwavelength gratings
Author(s): Shanalyn A. Kemme; David W. Peters; Joel R. Wendt; Tony R. Carter; Sally Samora
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A current micro-optical system project at Sandia National Laboratories employs an array of resonant subwavelength gratings (RSGs). An RSG functions as an extremely narrow wavelength and angular band reflector, or mode selector. Theoretical studies predict that the infinite, laterally-extended RSG can reflect 100% of the resonant light while transmitting the balance of the other wavelengths. Experimental realization of these remarkable predictions has been impacted primarily by fabrication challenges. Even so, we will present large area (1.0mm) RSG reflectivities as high as 100.2%, normalized to deposited gold. Broad use of the RSG will only truly occur in an accessible micro-optical system. The program at Sandia is a normal incidence array configuration of RSGs where each array element resonates with a distinct wavelength to act as a dense array of wavelength- and mode-selective reflectors. Because of the array configuration, RSGs can be matched to an array of pixels, detectors, or chemical/biological cells for integrated optical sensing. Micro-optical system considerations impact the ideal, large area RSG performance by requiring finite extent devices and robust materials for the appropriate wavelength. Experimental measurements are presented that demonstrate the component response as a function of decreasing RSG aperture dimension and off-normal input angular incidence.

Paper Details

Date Published: 10 November 2003
PDF: 8 pages
Proc. SPIE 5177, Gradient Index, Miniature, and Diffractive Optical Systems III, (10 November 2003); doi: 10.1117/12.506086
Show Author Affiliations
Shanalyn A. Kemme, Sandia National Labs. (United States)
David W. Peters, Sandia National Labs. (United States)
Joel R. Wendt, Sandia National Labs. (United States)
Tony R. Carter, Sandia National Labs. (United States)
Sally Samora, Sandia National Labs. (United States)


Published in SPIE Proceedings Vol. 5177:
Gradient Index, Miniature, and Diffractive Optical Systems III
Thomas J. Suleski, Editor(s)

© SPIE. Terms of Use
Back to Top