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Media type:
E-Article
Title:
Optical trapping and control of nanoparticles inside evacuated hollow core photonic crystal fibers
Contributor:
Grass, David;
Fesel, Julian;
Hofer, Sebastian G.;
Kiesel, Nikolai;
Aspelmeyer, Markus
Published:
AIP Publishing, 2016
Published in:
Applied Physics Letters, 108 (2016) 22
Language:
English
DOI:
10.1063/1.4953025
ISSN:
0003-6951;
1077-3118
Origination:
Footnote:
Description:
We demonstrate an optical conveyor belt for levitated nanoparticles over several centimeters inside both air-filled and evacuated hollow-core photonic crystal fibers (HCPCF). Detection of the transmitted light field allows three-dimensional read-out of the particle center-of-mass motion. An additional laser enables axial radiation pressure based feedback cooling over the full fiber length. We show that the particle dynamics is a sensitive local probe for characterizing the optical intensity profile inside the fiber as well as the pressure distribution along the fiber axis. In contrast to some theoretical predictions, we find a linear pressure dependence inside the HCPCF, extending over three orders of magnitude from 0.2 mbar to 100 mbar. A targeted application is the controlled delivery of nanoparticles from ambient pressure into medium vacuum.