Petrov Nikolai I, Nikitin Vladislav G, Danilov Viktor A, Popov Vladimir V, Usievich Boris A
Appl Opt. 2014 Sep 1;53(25):5740-4. doi: 10.1364/AO.53.005740.
A high-efficiency subwavelength diffractive beam combiner operating in a visible spectral range is designed, fabricated, and demonstrated. Such a device combines red, green, and blue color beams into one output light beam. Diffraction efficiencies of different types of gratings are calculated for various materials, incidence angles, and polarizations of light. It is shown that the plasmon resonance via a grating coupling occurs at the determined conditions. Subwavelength gratings with a period of 400 nm are fabricated and tested using laser and laser diode sources.
设计、制造并演示了一种在可见光谱范围内工作的高效亚波长衍射光束组合器。这种器件将红、绿、蓝三色光束组合成一束输出光束。针对各种材料、入射角和光的偏振，计算了不同类型光栅的衍射效率。结果表明，在特定条件下会通过光栅耦合发生等离子体共振。制作了周期为400纳米的亚波长光栅，并使用激光和激光二极管源进行了测试。
