Abstract
We demonstrate planar optical tweezers using the evanescent field of a silicon nitride tapered-waveguide junction between a singlemode waveguide and a multimode waveguide. Our experiments show that the junction embedded in a fluidic channel holds up to one and two polystyrene particles of sizes of 2.2 μm and 1 μm, respectively. The trapped particles are successively substituted by the incoming particles. Our experiments and numerical modeling reveal that the junction particle trapping depends on particle size and number.
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Woo June Choi, Kwan Seob Park, Tae Joong Eom, Myung-Kyu Oh, and Byeong Ha Lee
Opt. Lett. 37(14) 2784-2786 (2012)
S. E. Skelton, M. Sergides, R. Saija, M. A. Iatì, O. M. Maragó, and P. H. Jones
Opt. Lett. 38(1) 28-30 (2013)
Ting Lei and Andrew W. Poon
Opt. Express 21(2) 1520-1530 (2013)