Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets
Wood, T.A. and Gleeson, H.F. and Dickinson, M.R. and Wright, A.J. (2004) Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets. Applied Physics Letters, 84 (21). pp. 4292-4294. ISSN 0003-6951 (https://doi.org/10.1063/1.1753067)
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Abstract
A detailed study is presented that evaluates the relative importance of wave plate behavior, scattering processes and absorption phenomena in transferring optical torque from circularly polarized light to optically trapped nematic droplets. A wide range of parameters is considered: droplet diameters between 1 and 15 µm, birefringence values from 0.15 to 0.26 and trapping beam powers from 50 mW to 400 mW. Wave plate behavior is verified through the dependence of torque on droplet diameter and material birefringence. The dependence of the magnitude of the torque on material birefringence confirms the additional importance of the scattering mechanism. Absorption processes are found to be negligible.
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Item type: Article ID code: 4787 Dates: DateEvent24 May 2004PublishedSubjects: Science > Physics > Optics. Light
Science > PhysicsDepartment: Faculty of Science > Physics > Institute of Photonics Depositing user: Strathprints Administrator Date deposited: 15 Nov 2007 Last modified: 26 Oct 2024 00:19 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/4787