Highly efficient three-level blazed grating in the resonance domain.
We designed, fabricated, and characterized three-level transmission gratings in the resonance domain with reduced shadowing losses based on a three-wave interference mechanism. A new technological approach allows for fabrication of homogeneous and large area multilevel gratings without spurious artifacts. To our knowledge, the measured efficiency of 86% exhibits the largest value yet reported for a multilevel transmission grating in the resonance domain close to normal incidence.
Oliva
Maria
M
Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Strasse 7, 07745 Jena, Germany. maria.oliva@iof.fraunhofer.de
Michaelis
Dirk
D
Benkenstein
Tino
T
Dunkel
Jens
J
Harzendorf
Torsten
T
Matthes
Andre
A
Zeitner
Uwe D
UD