High-precision steering of multiple holographic optical traps
High-precision steering of multiple holographic optical traps
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DOI：
10.1364/opex.13.008678
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发表时间：
2005-10-17
期刊：
影响因子：
3.8
通讯作者：
Curtis, JE
中科院分区：
文献类型：
--
作者：
Schmitz, CHJ;Spatz, JP;Curtis, JE
随着全息光镊的出现，定位和操纵整个微观物体集合变得极其实用。将该技术应用于单分子实验需要光阱的空间定位具有很高的精度。本文计算了单光束全息图的理论位置分辨率，预测亚纳米分辨率是很容易实现的。实验证实的空间分辨率的全息图的像素和相位电平的数量的反比关系。对于至少纳米范围的位置分辨率，由复叠加全息图创建的多个光镊也遵循单个光束的理论预测。(c)2005年，美国光学学会。
Locating and steering entire ensembles of microscopic objects has become extremely practical with the emergence of holographic optical tweezers. Application of this technology to single molecule experiments requires great accuracy in the spatial positioning of optical traps. This paper calculates the theoretical position resolution of a single holographic beam, predicting that sub-nanometer resolution is easily achieved. Experimental corroboration of the spatial resolution's inverse dependence on the hologram's number of pixels and phase levels is presented. To at least a nanometer range position resolution, multiple optical tweezers created by complex superposition holograms also follow the theoretical predictions for a single beam. (c) 2005 Optical Society of America.