Rajapakse Charithra, Wang Fan, Tang Tiffany C Y, Reece Peter J, Leon-Saval Sergio G, Argyros Alexander
Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, Australia.
Opt Express. 2012 May 7;20(10):11232-40. doi: 10.1364/OE.20.011232.
We report on the demonstration of three-dimensional optical trapping inside the core of a hollow-core microstructured optical fiber specifically designed and fabricated for this purpose. Optical trapping was achieved by means of an external tweezers beam incident transversely on the fiber and focused through the fiber cladding. Trapping was achieved for a range of particle sizes from 1 to 5 µm, and manipulation of the particles in three-dimensions through the entire cross-section of the fiber core was demonstrated. Spectroscopy was also performed on single fluorescent particles, with the fluorescence captured and guided in the fiber core. Video tracking methods allowed the optical traps to be characterized and photobleaching of single particles was also observed and characterized.
我们报告了在专门为此设计和制造的空心微结构光纤纤芯内实现三维光学捕获的演示。光学捕获是通过横向入射到光纤上并通过光纤包层聚焦的外部镊子光束实现的。对于粒径范围为1至5 µm的一系列颗粒实现了捕获，并展示了在光纤纤芯的整个横截面上对颗粒进行三维操纵。还对单个荧光颗粒进行了光谱分析，荧光在光纤纤芯中被捕获和引导。视频跟踪方法使光学陷阱得以表征，并且还观察和表征了单个颗粒的光漂白现象。
