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Proceedings Paper

Continuous Transfer Of Angular Momentum From The Light To A Nematic Liquid Crystal In The Mesophase
Author(s): E. Santamato; B. Daino; M. Romagnoli; M. Settembre
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Paper Abstract

It is experimentally demonstrated that a circularly polarized laser beam normally incident on a homeotropic aligned nematic film can transfer continuously angular momentum to the sample. The angular momentum transfer is evidentiated by a collective precession of the liquid crystal molecules along the propagation direction of the incident beam. The effect is observed only if the laser intensity is above the threshold for the optical Freedericksz transition.

Paper Details

Date Published: 10 July 1987
PDF: 5 pages
Proc. SPIE 0701, 1986 European Conf on Optics, Optical Systems and Applications, (10 July 1987); doi: 10.1117/12.937070
Show Author Affiliations
E. Santamato, Universita di Napoli (Italy)
B. Daino, Fondazione "U.Bordonin" (Italy)
M. Romagnoli, Fondazione "U.Bordonin" (Italy)
M. Settembre, Fondazione "U.Bordonin" (Italy)


Published in SPIE Proceedings Vol. 0701:
1986 European Conf on Optics, Optical Systems and Applications
Stefano Sottini; Silvana Trigari, Editor(s)

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