| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 2, 2007
|
|
|---|---|---|
| Article Number | 07019 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.2971/jeos.2007.07019 | |
| Published online | 09 July 2007 | |
Regular papers
Design and fabrication of an all-dielectric grating with top-hat high diffraction efficiency over a broad spectral range
1
on leave from the Institute of General Physics Moscow, Russia
2
Laboratoire Hubert Curien UMR CNRS 5516 (formerly TSI), 18 rue B. Lauras, F-42000 Saint-Etienne
3
on leave from ISSP Sofia, Bulgaria
4
Institut für Oberfl¨achenmodifizierung, IOM, Permoserstrasse 15, D-04318 Leipzig, Germany
Received:
1
June
2007
Between 98% and 100% flat top efficiency –1st order TE diffraction over a 40 nm wavelength range centered at 800 nm can be obtained by an all-dielectric grating structure where the corrugation is etched in a high index layer unlike in the state of the art. 98% maximum efficiency and a wide-band top-hat diffraction efficiency spectrum are demonstrated experimentally.
Key words: femtosecond laser / compression gratings / dielectric multilayer / leaky mode
© The Author(s) 2007. All rights reserved.
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