Title

Momentum and torque transfer from light to liquid crystal

Abstract

Orientational nonlinearity such as momentum and torque transfer is demonstrated in dye-doped absorbing liquid crystals (LC) as a function of the light field. The light is considered as a flux of photons carrying momentum hk/2π and energy hv moving along the Poynting vector. The momentum is balanced when the energy in and out is exactly balanced for the transparent medium. However, the directions of the input and output photons make an angle with the perpendicular to the input/output facets. Therefore, a momentum arm a appears, resulting a torque T transferred from light to LC.

Publication Date

1-1-1997

Publication Title

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series

Volume

12

Number of Pages

168-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

0030653546 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0030653546

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