[18p-231C-1~19] 3.1 Basic optics and frontier of optics

△ [18p-231C-9] Design of optical trap potential for optical force measurement on nanoparticles

〇Ryoma Fukuhara¹, Yoshito Tanaka^1,2, Sanpon Vantasin¹, Tsutomu Shimura¹ (1.IIS, the Univ. of Tokyo, 2.JST PRESTO)

Keywords:optical manipulation, optical force measurement, nano structure

We have developed the measurement method of optical force induced on nanostructures, using a laser trapping technique. This method includes the analysis of trapping potential, and it results in the trade-off between the sensitibity and the stability. To solve the trade-off, we are developing a feedback system of the laser power following the Brownian motion of trapped particles.