论文标题
通过逆行 - 反射光子纳米喷气机的焦点光聚焦的光学对比度极限
Overcoming optical contrast limit of mesoscale light focusing by means of retrograde-reflection photonic nanojet
论文作者
论文摘要
从理论上考虑了逆行反射模式（Retro-PNJ）下次波光子纳米射流的物理起源。这种特定类型的光子纳米喷气机出现在平面光波的顺序双聚焦上，该透明的介电介电微粒位于平坦反射镜附近。据我们所知，我们首次报告了Retro-PNJ的独特属性，该特性使用具有光学对比度的微粒超过极限值（n> 2），从而从根本上将retro-pnj与常规PNJ行为区分开来，从而增加了其焦距和强度。这可能会大大增加基于PNJ的光学镊子的诱捕潜力。
The physical origin of subwavelength photonic nanojet in retrograde-reflection mode (retro-PNJ) is theoretically considered. This specific type of photonic nanojet emerges upon sequential double focusing of a plane optical wave by a transparent dielectric microparticle located near a flat reflecting mirror. For the first time to the best of our knowledge, we report a unique property of retro-PNJ for increasing its focal length and intensity using microparticles with the optical contrast exceeding limiting value (n > 2) that fundamentally distinguishes retro-PNJ from regular PNJ behavior. This may drastically increase the trapping potential of PNJ-based optical tweezers.
