Open AccessSize-dependent trapping behavior and optical emission study of NaYF4 nanorods in optical fiber tip tweezers
Author(s) -
Godefroy Leménager,
Maud Thiriet,
Florent Pourcin,
Khalid Lahlil,
F. J. ValdiviaValero,
Gérard Colas des Francs,
Thierry Gacoin,
Jochen Fick
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.032156
Subject(s) - nanorod , optical tweezers , rod , trapping , materials science , optics , tweezers , optical fiber , fiber , molecular physics , optoelectronics , nanotechnology , physics , composite material , medicine , ecology , alternative medicine , pathology , biology
Trapping of NaYF 4 :Er/Yb/Gd nanorods using an original optical fiber-tip tweezers is reported. Depending on their length, nanorods are reproducibly trapped in single or dual fiber tip configurations. Short rods of 600 nm length are trapped with two fiber tips facing each other. In contrary, long rods (1.9 μm) can be stably trapped at the apex of one single fiber tip and at a second stable trapping position 5 μm away from the tip. The up-conversion emission of trapped long nanorods is studied as a function of the position on the nanorod and in three orthogonal directions. The experimental results are discussed using numerical simulations based on exact Maxwell Stress Tensor approach.