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Fast azobenzene liquid crystals
Wavelengts graph
New azobenzene LCs have enhanced photosensitivity for visible wavelengths and can be used for optical switching of nanosecond pulses as well as cw laser beams
Another wavelength graph
Tc: clearing temperature; lm: wavelength of maximal absorption; a absorption coefficient at 532 nm wavelength; t : cis-isomer lifetime




References

  1. U. A. Hrozhyk, S. V. Serak, N. V. Tabiryan, L. Hoke, D. M. Steeves, B. R. Kimball, ”Azobenzene liquid crystalline materials for efficient optical switching with pulsed and/or continuous wave laser beams,” Optics Express, 18,. 8697-8704 (2010).
  2. U. Hrozhyk, S. V. Serak, N. V. Tabiryan, T. J. White, T. J. Bunning, “Optically switchable, rapidly relaxing cholesteric liquid crystals reflectors”, Optics Express, 18, 9651-9657 (2010).
  3. L. De Sio, S. Serak, N. Tabiryan, S. Ferjani, A. Veltri, C. Umeton, ”Composite holographic gratings containing light-responsive liquid crystals for visible bichromatic switching,” Adv. Mat., 22, 2316–2319 (2010).
  4. R. M. Osgood, D. M. Steeves, L. E. Belton, J. R. Welch, R. Nagarajan, Caitlin Quigley, G. F. Walsh, N. V. Tabiryan, S. Serak, B. R. Kimball, “Optical properties of nanoparticle-doped azobenzene liquid crystals”, Mater. Res. Soc. Symp. Proc., 1142, 1142-JJ10-05 – 1142-JJ10-13 (2009).
  5. U. Hrozhyk, S. Serak, N. Tabiryan, D. Steeves, L. Hoke, B. Kimball, “Azobenzene liquid crystals for fast reversible optical switching and enhanced sensitivity for visible wavelengths”, Liquid Crystals XIII, ed. by I.-C. Khoo, Proc. of SPIE, 7414, 74140L-1-15 (2009).
  6. U. Hrozhyk, S. Nersisyan, S. Serak, N. Tabiryan, L. Hoke, D. Steeves, B. Kimball, “Optical switching of liquid-crystal polarization gratings with nanosecond pulses”, Opt. Lett. 34, 2554-2556 (2009).
  7. U. A. Hrozhyk, S. V. Serak, N. V. Tabiryan, L. Hoke, D. M. Steeves, B. Kimball, and G. Kedziora,” Systematic study of absorption spectra of donor–acceptor azobenzene mesogenic structures”, Mol. Cryst. & Liq. Cryst. 489, 257[583]–272[598] (2008).
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