光学
衍射
衍射效率
波长
衍射光栅
材料科学
光电子学
物理
作者
Valter Drazic,O.V. Shramkova,Bobin Varghese,L. Bouchet,Vincent Brac de la Perrière,Jesse Schiffler,Patrice Twardowski,Sylvain Lecler,Walter Benjamín,Estelle Mairiaux,F. Bavedila,M. Faucher,Valérie Allié
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2022-01-04
卷期号:30 (2): 1293-1293
被引量:2
摘要
Waveguide based optical combiners for augmented reality (AR) glasses are integrating several surface relief gratings (SRG) whose pitch sizes can be as small as 200 nm for the blue wavelength. All SRG components exploit the first diffraction order to couple in and out or to deviate the light. We present SRG using higher diffraction orders featuring over-wavelength pitch sizes. Our gratings use the edge wave (EW) diffraction phenomenon to steer light in the preferred far field direction.
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