2007
DOI: 10.2971/jeos.2007.07019
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Design and fabrication of an all-dielectric grating with top-hat high diffraction efficiency over a broad spectral range

Abstract: International audienceBetween 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

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Cited by 19 publications
(12 citation statements)
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“…The commercial code MC Crossed Gratings has been used. This code has been successfully used in several published works . The code calculates the interaction of a plane electromagnetic wave with the multilayer corrugated structure providing the efficiencies (complex amplitude and power) of all reflected and transmitted diffraction waves.…”
Section: Methodsmentioning
confidence: 99%
“…The commercial code MC Crossed Gratings has been used. This code has been successfully used in several published works . The code calculates the interaction of a plane electromagnetic wave with the multilayer corrugated structure providing the efficiencies (complex amplitude and power) of all reflected and transmitted diffraction waves.…”
Section: Methodsmentioning
confidence: 99%
“…Consequently, the widening of the tolerance of dielectric gratings has gained most of the efforts over the last 10 years. It was suggested in 2007 to etch the grating on the high refractive index to improve the spectral tolerance [130,131]. One of the nicest achievement in the design and fabrication of diffraction gratings was obtained by Martz et al who increased the contrast between the different materials of the multilayer and by etching the grating in different materials [127] (see Fig.…”
Section: Laser Damage Resistancementioning
confidence: 99%
“…Furthermore, guide-mode resonance (GMR) [14], which would destroy the pulse spectrum shape and significantly decrease the LIDT of MDG [15], would be excited, especially when the spectrum of incident light covers a broad wavelength band. Besides, the widest bandwidth of MDG with high efficiency is only 40 nm centered at 800 nm [16][17][18] because there is no effective design method reported in the literature, and such bandwidth is insufficient to meet the requirement in a fs pulse laser system, which needs near 100% efficiency over 100 nm bandwidth wide. Therefore, it is necessary and important to develop an effective method to design a broadband, high-efficiency PCG.…”
Section: Introductionmentioning
confidence: 99%