Design and fabrication of an all-dielectric grating with top-hat high diffraction efficiency over a broad spectral range

Nikolay Lyndin (1) , Manuel Flury (1) , Svetlen Tonchev (1) , Renate Fechner (2) , Olivier Parriaux (1)

1 LHC - Laboratoire Hubert Curien
2 IOM - Institut für Oberflächenmodifizierung

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.

Keywords: femtosecond laser; compression gratings; dielectric multilayer; leaky mode

Domains: Engineering Sciences [physics]; Optics / Photonic

Nikolay Lyndin, Manuel Flury, Svetlen Tonchev, Renate Fechner, Olivier Parriaux. Design and fabrication of an all-dielectric grating with top-hat high diffraction efficiency over a broad spectral range. Journal of European Optical Society - Rapid Publications, 2007, 2 (07019), pp.1-5. ⟨10.2971/jeos.2007.07019⟩. ⟨ujm-00161511⟩