Piccirillo, Bruno and Vella, Angela and Setaro, Antonio and Santamato, Enrico (2006) Nonlinear dynamics induced in liquid crystals in the presence of the orbital and spin angular momentum of light. [Pubblicazione in rivista scientifica]

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Tipologia del documento:	Pubblicazione in rivista scientifica
Lingua:	English
Titolo:	Nonlinear dynamics induced in liquid crystals in the presence of the orbital and spin angular momentum of light
Autori:	Autore Email Piccirillo, Bruno [non definito] Vella, Angela [non definito] Setaro, Antonio [non definito] Santamato, Enrico [non definito]
Autore/i:	B. Piccirillo, A. Vella, A. Setaro, E. Santamato
Data:	2006
Numero di pagine:	4
Dipartimento:	Scienze fisiche
Numero identificativo:	10.1103/PhysRevE.73.062701
Titolo del periodico:	PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS
Data dell'evento:	2006-JUN
Data:	2006
Volume:	73
Intervallo di pagine:	062701-1-062701-4
Numero di pagine:	4
Parole chiave:	Ottica nonlineare, cristalli liquidi, dinamica nonlineare
Numero identificativo:	10.1103/PhysRevE.73.062701
Depositato il:	20 Ott 2010 08:00
Ultima modifica:	30 Apr 2014 19:41
URI:	http://www.fedoa.unina.it/id/eprint/6218

Abstract

We studied the dynamical effects induced in a homeotropic nematic film when a normally incident circularly polarized light beam with an elliptical intensity profile is used. A three dimensional dynamical model shows that, besides the spin, the orbital angular momentum of photons also plays a role in the reorientation process. Our measurements fairly reproduce the main dynamical features predicted by the model in the near threshold region. The model, however, does not work, as it is, at higher incident laser power where chaotic director rotation was reported [A. Vella, A. Setaro, B. Piccirillo, E. Santamato, Phys. Rev. E 67, 051704 (2003)].

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