Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets
Mechanisms of optical angular momentum transfer to nematic liquid crystalline droplets
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DOI：
10.1063/1.1753067
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发表时间：
2004-05-24
影响因子：
4
通讯作者：
Wright, AJ
中科院分区：
文献类型：
--
作者：
Wood, TA;Gleeson, HF;Wright, AJ
详细的研究，提出了评估波片的行为，散射过程和吸收现象的相对重要性，在传递光学扭矩从圆偏振光的光学捕获微滴。被认为是一个广泛的参数范围：1和15妈妈之间的液滴直径，双折射值从0.15到0.26和捕获光束功率从50 mW到400 mW。波片的行为通过液滴直径和材料双折射的扭矩的依赖性进行验证。扭矩大小对材料双折射的依赖性证实了散射机制的额外重要性。吸收过程被认为是可以忽略不计的。(C)2004年，美国物理学会。
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 mum, 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. (C) 2004 American Institute of Physics.