Journal
OPTICS LETTERS
Volume 35, Issue 16, Pages 2774-2776Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.002774
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- European Union (EU) [FZK: B 408-04004]
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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. (C) 2010 Optical Society of America
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