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- Title
Single-Layered Microscale PDLC Films for Electro-Optical Modulation of Laser Radiation.
- Authors
Hadjichristov, G. B.; Marinov, I. G.; Petrov, A. G.; Marino, S.; Versace, C.; Scaramuzza, N.
- Abstract
We report on low-voltage, high-contrast amplitude/phase modulators of laser radiation on the basis of microscale polymer-dispersed liquid crystal (PDLC) single layers providing interference contrast enhancement. The modulators were prepared from liquid crystal (LC) E7 in the solid matrix of UV-cured polymer NOA65. Operating at low voltages, E7/NOA65 single-layered PDLC films of thickness 10-25 µm and mean diameter of LC droplets up to 50 µm are capable of producing a large phase shift up to #&960;/2 for the propagating laser light. This property is very attractive for linear and non-linear optical applications. The precise spatial control of droplet size along the film thickness allows the linear droplet-size gradient single-layered PDLC films to be used for tunable spatial light modulators and other devices for active control of laser radiation.
- Subjects
POLYMER-dispersed liquid crystals; LIQUID crystals; LASER beams; POLYMERS; PHASE shift (Nuclear physics)
- Publication
Bulgarian Journal of Physics, 2013, Vol 40, Issue 4, p301
- ISSN
1310-0157
- Publication type
Article