[19p-B203-1~19] 3.1 Basic optics and frontier of optics

[19p-B203-11] Diamond nanoparticle selection using a tapered fiber

〇Kyosuke Yamauchi¹, Hideki Fujiwara¹, Keiji Sasaki¹ (1.RIES, Hokkaido Univ.)

Keywords:tapered fiber, trapping, nano-diamond

When laser is introduced into a tapered fiber, we can achive long distance propagation keeping with high light focusing. Using a tapered fiber and counter propagating lasers, We report on the manipulation and selection of nano-diamonds . When lasers with different colors are introduced into the tapered fiber, fluorescent nano-diamonds can be trapped and moved to the propagation direction of a green laser while non-fluorescent nano-diamonds move towards the opposite direction. The results show the possibility of the selective nano-particle trapping and transportation depending on the difference in their absorption properties.