Three-dimensional intensity distribution of helico-conical optical beams
Three-dimensional intensity distribution of helico-conical optical beams
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DOI：
10.1117/12.700055
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发表时间：
2007-02
影响因子：
3.4
通讯作者：
C. Alonzo;P. Rodrigo;I. Perch-Nielsen;J. Glückstad
中科院分区：
文献类型：
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作者：
C. Alonzo;P. Rodrigo;I. Perch-Nielsen;J. Glückstad
螺旋锥形光束是最近引入的一类光束，其将螺旋和锥形相位波前相乘地联合收割机组合。聚焦这些光束导致在透镜的焦平面处的螺旋强度分布。进一步的理论和实验研究揭示了有趣的三维强度模式附近的焦点区域，包括围绕光轴的螺旋结构。这里还介绍了基于多个螺旋锥形光束叠加的这些光分布的变化。这些光束被期望产生有趣的动力学时，应用于微观粒子，如电介质微球，甚至生物细胞的光学捕获。
Helico-conical optical beams are a recently introduced class of beams that multiplicatively combine helical and conical phase fronts. Focusing these beams leads to a spiral intensity distribution at the focal plane of the lens. Further theoretical and experimental examination reveals interesting three-dimensional intensity patterns near the focal region, including a cork-screw structure around the optical axis. Variations on these light distributions based on the superposition of multiple helico-conical beams are also presented here. These beams are expected to yield interesting dynamics when applied to the optical trapping of microscopic particles, such as dielectric microspheres or even biological cells.