Sinclair Gavin, Jordan Pamela, Courtial Johannes, Padgett Miles, Cooper Jon, Laczik Zsolt
Opt Express. 2004 Nov 1;12(22):5475-80. doi: 10.1364/opex.12.005475.
The micromanipulation of objects into 3-dimensional geometries within holographic optical tweezers is carried out using modified Gerchberg-Saxton (GS) and direct binary search (DBS) algorithms to produce the hologram designs. The algorithms calculate sequences of phase holograms, which are implemented using a spatial light modulator, to reconfigure the geometries of optical traps in many planes simultaneously. The GS algorithm is able to calculate holograms quickly from the initial, intermediate and final trap positions. In contrast, the DBS algorithm is slower and therefore used to pre-calculate the holograms, which are then displayed in sequence. Assembly of objects in a variety of 3-D configurations is semi-automated, once the traps in their initial positions are loaded.
在全息光镊中将物体微操纵成三维几何形状是通过使用改进的格尔奇贝格 - 萨克斯顿(GS)算法和直接二进制搜索(DBS)算法来生成全息图设计实现的。这些算法计算相位全息图序列,该序列通过空间光调制器来实现,以便同时在多个平面中重新配置光阱的几何形状。GS算法能够根据光阱的初始、中间和最终位置快速计算全息图。相比之下,DBS算法速度较慢,因此用于预先计算全息图,然后按顺序显示。一旦将物体加载到其初始位置的光阱中,将物体组装成各种三维配置的过程就是半自动的。