Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets

T.A. Wood, H.F. Gleeson, M.R. Dickinson, A.J. Wright

Research output: Contribution to journalArticle

48 Citations (Scopus)

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.
LanguageEnglish
Pages4292-4294
Number of pages2
JournalApplied Physics Letters
Volume84
Issue number21
DOIs
Publication statusPublished - 24 May 2004

Fingerprint

momentum transfer
birefringence
torque
angular momentum
liquids
scattering
polarized light
trapping

Keywords

  • lasers
  • optics
  • optoelectronics

Cite this

Wood, T.A. ; Gleeson, H.F. ; Dickinson, M.R. ; Wright, A.J. / Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets. In: Applied Physics Letters. 2004 ; Vol. 84, No. 21. pp. 4292-4294.
@article{34d0312c32bd446db6700669c006e336,
title = "Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets",
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.",
keywords = "lasers, optics, optoelectronics",
author = "T.A. Wood and H.F. Gleeson and M.R. Dickinson and A.J. Wright",
year = "2004",
month = "5",
day = "24",
doi = "10.1063/1.1753067",
language = "English",
volume = "84",
pages = "4292--4294",
journal = "Applied Physics Letters",
issn = "0003-6951",
number = "21",

}

Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets. / Wood, T.A.; Gleeson, H.F.; Dickinson, M.R.; Wright, A.J.

In: Applied Physics Letters, Vol. 84, No. 21, 24.05.2004, p. 4292-4294.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets

AU - Wood, T.A.

AU - Gleeson, H.F.

AU - Dickinson, M.R.

AU - Wright, A.J.

PY - 2004/5/24

Y1 - 2004/5/24

N2 - 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.

AB - 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.

KW - lasers

KW - optics

KW - optoelectronics

UR - http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=APPLAB000084000021004292000001&idtype=cvips&prog=normal

U2 - 10.1063/1.1753067

DO - 10.1063/1.1753067

M3 - Article

VL - 84

SP - 4292

EP - 4294

JO - Applied Physics Letters

T2 - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 21

ER -