Destouches N, Tishchenko A, Pommier J, Reynaud S, Parriaux O, Tonchev S, Ahmed M
Opt Express. 2005 May 2;13(9):3230-5. doi: 10.1364/opex.13.003230.
A resonant diffraction grating comprising a mirror, a dielectric layer and a high index corrugation at the layer-air interface is shown to exhibit off-Littrow the record diffraction efficiency of 99% in the -1st reflected order at 1064 nm wavelength thanks to the excitation of a leaky mode of the layer. Such high figure is obtained by a grating 5 to 10 times shallower than in current attempts to realize high efficiency all-dielectric gratings.
一种共振衍射光栅，由一个反射镜、一个介电层以及在层 - 空气界面处的高折射率波纹组成。结果表明，由于该层泄漏模式的激发，在1064nm波长下，这种光栅在非 Littrow 配置下，-1 级反射阶次的衍射效率达到了创纪录的99%。如此高的数值是通过一个比当前实现高效率全介电光栅的尝试中所使用的光栅浅5到10倍的光栅获得的。
