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Optical trapping and control of nanoparticles inside evacuated hollow core photonic crystal fibers
S. Kuhr, W. Alt, D. Schrader, I. Dotsenko, Y. Miroshnychenko, W. Rosenfeld, M. Khudaverdyan, V. Gomer, A. Rauschenbeutel, and D. Meschede, Phys. Rev. Lett. 91, 213002 (2003).
The standing wave contribution is not shown as it modulates the pattern on a much shorter length scale.
T. Li, Fundamental Tests of Physics with Optically Trapped Microspheres, Springer Theses ( Springer, New York, New York, NY, 2013), p. 216.
, M. Rashid
, D. Hempston
, J. Bateman
, and H. Ulbricht
, e-print arXiv:1603.02917
, J. Gieseler
, C. Moritz
, C. Dellago
, R. Quidant
, and L. Novotny
, e-print arXiv:1603.03420
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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.
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