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Title: Optically Generated Reconfigurable Photonic Structures of Elastic Quasiparticles in Frustrated Cholesteric Liquid Crystals

Abstract

We describe laser-induced two-dimensional periodic photonic structures formed by localized particle-like excitations in an untwisted confined cholesteric liquid crystal. The individual particle-like excitations (dubbed 'Torons') contain three-dimensional twist of the liquid crystal director matched to the uniform background director field by topological point defects. Using both single-beam-steering and holographic pattern generation approaches, the periodic crystal lattices are tailored by tuning their periodicity, reorienting their crystallographic axes, and introducing defects. Moreover, these lattices can be dynamically reconfigurable: generated, modified, erased and then recreated, depending on the needs of a particular photonic application. This robust control is performed by tightly focused laser beams of power 10-100 mW and by low-frequency electric fields at voltages {approx}10 V applied to the transparent electrodes.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), National Science Foundation (NSF), Directorate of Chemistry and Life Sciences of Air Force Office of Scientific Research, Institue for Complex Adaptive Matter
OSTI Identifier:
1047960
Report Number(s):
NREL/JA-5900-55333
TRN: US201216%%586
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 20; Journal Issue: 7
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CRYSTAL LATTICES; DEFECTS; ELECTRIC FIELDS; ELECTRODES; LASERS; LIQUID CRYSTALS; PERIODICITY; POINT DEFECTS; TUNING; liquid crystals; laser trapping; photonic crystals; nonlinear optics

Citation Formats

Smalyukh, Ivan I., Kaputa, Daniel, Kachynski, Aliaksandr V., Kuzmin, Andrey N., Ackerman, Paul J., Twombly, Christopher W., Lee, Taewoo, Trivedi, Rahul P., and Prasad, Paras N. Optically Generated Reconfigurable Photonic Structures of Elastic Quasiparticles in Frustrated Cholesteric Liquid Crystals. United States: N. p., 2012. Web. doi:10.1364/OE.20.006870.
Smalyukh, Ivan I., Kaputa, Daniel, Kachynski, Aliaksandr V., Kuzmin, Andrey N., Ackerman, Paul J., Twombly, Christopher W., Lee, Taewoo, Trivedi, Rahul P., & Prasad, Paras N. Optically Generated Reconfigurable Photonic Structures of Elastic Quasiparticles in Frustrated Cholesteric Liquid Crystals. United States. doi:10.1364/OE.20.006870.
Smalyukh, Ivan I., Kaputa, Daniel, Kachynski, Aliaksandr V., Kuzmin, Andrey N., Ackerman, Paul J., Twombly, Christopher W., Lee, Taewoo, Trivedi, Rahul P., and Prasad, Paras N. Mon . "Optically Generated Reconfigurable Photonic Structures of Elastic Quasiparticles in Frustrated Cholesteric Liquid Crystals". United States. doi:10.1364/OE.20.006870.
@article{osti_1047960,
title = {Optically Generated Reconfigurable Photonic Structures of Elastic Quasiparticles in Frustrated Cholesteric Liquid Crystals},
author = {Smalyukh, Ivan I. and Kaputa, Daniel and Kachynski, Aliaksandr V. and Kuzmin, Andrey N. and Ackerman, Paul J. and Twombly, Christopher W. and Lee, Taewoo and Trivedi, Rahul P. and Prasad, Paras N.},
abstractNote = {We describe laser-induced two-dimensional periodic photonic structures formed by localized particle-like excitations in an untwisted confined cholesteric liquid crystal. The individual particle-like excitations (dubbed 'Torons') contain three-dimensional twist of the liquid crystal director matched to the uniform background director field by topological point defects. Using both single-beam-steering and holographic pattern generation approaches, the periodic crystal lattices are tailored by tuning their periodicity, reorienting their crystallographic axes, and introducing defects. Moreover, these lattices can be dynamically reconfigurable: generated, modified, erased and then recreated, depending on the needs of a particular photonic application. This robust control is performed by tightly focused laser beams of power 10-100 mW and by low-frequency electric fields at voltages {approx}10 V applied to the transparent electrodes.},
doi = {10.1364/OE.20.006870},
journal = {Optics Express},
number = 7,
volume = 20,
place = {United States},
year = {2012},
month = {3}
}

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