Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Shear-enhanced diffraction from thin permanent gratings in dye-doped nematic liquid crystal cells

Not Accessible

Your library or personal account may give you access

Abstract

Permanent gratings are recorded in planar-aligned dye-doped nematic liquid crystal cells under visible light illumination. By increasing the irradiation intensity and exposure time, several diffraction orders of the recorded gratings are obtained in the Raman–Nath diffraction regime. By applying a dynamic transverse shear on one of the confining plates of the cell, an enhancement of the diffraction efficiency is achieved, which follows the period of the grating. By microscope inspection under static displacement of the upper plate, surface gratings formed by the dye adsorption are revealed in both the front and rear windows of the cell, indicating that the diffraction amplification originates from a coherent superposition of the diffracted orders when the gratings are displaced half a period. The effect provides self-matched amplification of diffraction with a simple cell, a single photo-inscription stage, and elementary displacement steps.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Electrically tunable polarization of random lasing from dye-doped nematic liquid crystals

Fengfeng Yao, Rongqu Hong, Boao Zhang, Yanbo Pei, Chunfeng Hou, and Xiudong Sun
Opt. Lett. 45(22) 6118-6121 (2020)

Optical vortices generated by edge dislocations in electro-convective instability arrays of nematic liquid crystals

Juan Pablo Yunda, Bruno Zappone, Domenico Alj, Antonio De Luca, and Melissa Infusino
Opt. Lett. 43(9) 1947-1949 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved