Three-dimensional force calibration of a single-beam optical gradient trap
Three-dimensional force calibration of a single-beam optical gradient trap
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DOI：
10.1088/0953-8984/14/33/314
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发表时间：
2002-08-26
影响因子：
2.7
通讯作者：
Henderson, S
中科院分区：
文献类型：
--
作者：
Bartlett, P;Henderson, S
我们使用高分辨率后焦平面探测器同时测量单光束光学梯度陷阱中微米级粒子的轴向力和横向力常数。我们测量施加到被捕获粒子上的光学力，作为粒子和介质的相对折射率、粒子半径和激光束功率的函数。结果与最近的理论预测进行了比较。
We have used a high-resolution back-focal-plane detector to make simultaneous measurements of the axial and lateral force constants of a micron-sized particle in a single-beam optical gradient trap. We measure the optical force applied to the trapped particle as a function of the relative index of refraction of particle and medium, the radius of the particle, and the laser beam power. Results are compared with recent theoretical predictions.