23 July 2014 Slow light in liquid crystal media
Author Affiliations +
Optical Engineering, 53(10), 102704 (2014). doi:10.1117/1.OE.53.10.102704
Liquid crystal media are characterized by large and tunable dispersive properties and hence allow achievement of large group delays. At the same time, liquid crystals provide large areas and are easily reconfigurable and highly sensitive devices; they are, therefore, well adapted for interferometric applications. Two different ways of achieving slow light in liquid crystals are presented. The first method consists of exploiting photoisomerization-induced transparency in dye-doped chiral liquid crystals, and the second method makes use of two-wave mixing optical resonance in pure nematics. In both mechanisms, two beams are sent to the medium, where they create a grating, either of absorption or of refractive index. Both physical mechanisms are elucidated in the context of slow light, then, as examples of sensing applications, Doppler shift measurements and adaptive holography are presented.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Umberto Bortolozzo, Dong Wei, Jean-Pierre Huignard, Stefania Residori, "Slow light in liquid crystal media," Optical Engineering 53(10), 102704 (23 July 2014). https://doi.org/10.1117/1.OE.53.10.102704


Slow light in dye-doped chiral liquid crystals
Proceedings of SPIE (March 06 2013)
Two-wave mixing in acrilamyde-based photopolymers
Proceedings of SPIE (June 04 2001)
Nonlinear effects in a liquid crystal optical oscillator
Proceedings of SPIE (September 12 2007)
Transversely excited liquid crystal cells
Proceedings of SPIE (January 16 2002)

Back to Top