Single beam optical vortex tweezers with tunable orbital angular momentum

We propose a single beam method for generating optical vortices with tunable optical angular momentum without altering the intensity distribution. With the initial polarization state varying from linear to circular, we gradually control the torque transferred to the trapped non-absorbing and non-bir...

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Bibliographic Details
Published in:Applied physics letters 2014-06, Vol.104 (23)
Main Authors: Gecevičius, Mindaugas, Drevinskas, Rokas, Beresna, Martynas, Kazansky, Peter G.
Format: Article
Language:English
Subjects:
Angular momentum
Applied physics
Beads
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DISTRIBUTION
INTERACTIONS
ORBITAL ANGULAR MOMENTUM
POLARIZATION
ROTATION
SILICA
Silicon dioxide
TORQUE
TRAPPING
Tribology
VORTICES
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Summary:We propose a single beam method for generating optical vortices with tunable optical angular momentum without altering the intensity distribution. With the initial polarization state varying from linear to circular, we gradually control the torque transferred to the trapped non-absorbing and non-birefringent silica beads. The continuous transition from the maximum rotation speed to zero without changing the trapping potential gives a way to study the complex tribological interactions.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4882418