Dye doped liquid crystal

M. Yaegashi, A. Shishido, T. Shiono and T. Dceda, Effect of ester moieties in dye structures on photoinduced reorientation of dye-doped liquid crystals, Client. Mater., 17, 4304-4309 (2005). 

Kato, J. Yamaguchi, I. Defect enhancement of periodic stmcture using dye-doped liquid-crystal cells. Proc. SPIE-Int. Soc. Opt. Eng. 1996, 2778, 557-558. 

Kato, J. Yamaguchi, I. Tanaka, H. Nonlinear spatial filtering with a dye-doped liquid-crystal cell. Opt. Lett. 1996, 21, 767-769. 

Chen, A. G. S. Brady, D. J. Surface-stabihzed holography in an azo-dye-doped liquid crystal. Opt. Lett. 1992,17, 1231-1233. 

M. Warenghem, J. F. Henninot, F. Derrin, and G. Abbate, Thermal and orientational spatial optical solitons in dye-doped liquid crystals. Mol. Cryst. Liq. Cryst. 373, 213 (2002). 

X. Li, C. P. Chen, H. Y. Gao, et al., Video-Rate Holographic Display Using Azo-Dye-Doped Liquid Crystal, J. Disp. Technol. 10, 6 (2014). 

Photoinduced conformational changes in azo-dye-doped liquid crystals have been used for real-time holography [65]. The orientation of azo dyes by an optical field, the Weigert effect [66], has been used to induce orientation of liquid crystals both in the bulk and in alignment layers [67, 68]. 

Todorov T, Nikolova L, Stoyanova K, Tomova N (1985) Polarization holograph. 3 some applications of polarizatirai holographic recording. Appl Opt 24 785-788 Wu WY, Mo TS, Fuh AYG (2006) Polarization charactmstics of diffracted beams from twisted nematic gratings fabricated by the photoalignment effect in dye-doped liquid crystal films. J Opt Soc Am B 23 1737-1742... 

Lucchetti, L., M. Di Fabrizio, O. Francescangeh, and F. Simoni. 2004. Colossal optical nolinearity in dye-doped liquid crystals. Opt. Commun. 233 417. 

Figure 8.11. Schematic diagram of the optical fields and their propagation direction in a planar aligned dye-doped liquid crystal. " The two fields Ei and E2 are coherent beams derived from splitting a pump laser to induce dynamic grating in the liquid crystal sample. E3 is the probe beam.

Gibbons, W. M., P. J. Shannon, S.-T. Sun, and B. J. Swetlin. 1991. Surface-mediated alignment of nematic liquid crystals with polarized laser light. Nature (London). 351 49-50 see also Chen, A. G.-S., and D. J. Brady. 1992. Surface-stabilized holography in an azo-dye-doped liquid crystal. Opt. Lett. 17 1231-1233. 

Khoo, I. C., H. Li, and Yu Liang. 1993. Optically induced extraordinarily large negative orientational nonlinearity in dye-doped liquid crystal. lEEEJ. Quantum Electron. QE-29 1444. 

Table 12.3. Comparison of the Performance Characteristics of Commercial Liquid Crystal Spatial Light Modulator (LCSLM) with What Could he Expected of Dye-Doped Liquid Crystal (DDLC) Film...

Khoo, I. C., M. V. Wood, M. Y. Shih, and P. H. Chen. 1999. Extremely nonlinear photosensitive liquid cry stals for image sensing and sensor protectioa Opt Express. 4(11 ) 431 142 Shih, M. Y., I. C. Khoo, A. Shishido, M. V. Wood, and P. H. Chen. 2000. All-optical image processing with a supra nonlinear dye-doped liquid crystal film. Opt Lett. 25 978-980. 

In [26], we report a detailed study on TRPS and steady-state fluorescence of HK271 in different liquids as a function of the excitation-light wavelength, A. These experiments have been motivated by the observed A-dependence of the merit figure n in certain dye-doped liquid crystals [27,28]. In particular. 

Marrucci,L.,Paparo, D.,Vetrano,M.R.,Colicchio, M., Santamato,E.,and Viscardi, G. (2000). Role of dye structure in photoinduced reorientation of dye-doped liquid crystals./. Chem. Phys. 113 10361-10366. 

Kreuzer, M., Hanisch, E, Eidenschink, R., Paparo, D., and Marrucci, L. (2002). Large deuterium isotope effect in the optical nonlinearity of dye-doped liquid crystals. Phys. Rev. Lett. 88 013902(1 ). 

Figure 5.28 Upper experimental setup [40], Lenses LI and L2 are used to expand a plane wave, and D is a diaphragm. Lenses L3 and L4 are the transformation lenses, A is an analyzer, and DPSS a diode-pumped solid-state laser. The DDLC sample is placed in the transform plane. Sc is the command surface that changes the orientation of the photosensitive dye absorbed on it Sg is the reference surface with rubbed and fixed LC alignment. Lower the object (a grating mask with 25 mm spacing) is a periodic step function that produces numerous diffracted orders after Fourier transformation LI, lens. Reproduced from T.-H. Lin and A. Fuh, Polarization controllable spatial filter based on azo-dye-doped liquid-crystal film. Optics Letters 30, 1390 (2005), Optical Society of America...

Figure 5.29 Schematic fabrication of the Fresnel zone plate [41], Also shown is the microscopic image of the fabricated DDLC Fresnel lens observed under a crossed polarizer optical microscope with the rubbing direction (R) of the cell making an angle of 45° with the polarizer axis. Reproduced from L.-C. Lin, H.-C. Jau, T.-H. Lin, and A. Fuh, Highly efficient and polarization-independent Fresnel lens based on dye-doped liquid crystal. Optics Express 15, 2900 (2007), Optical Society of America...

T.-H. Lin and A. Fuh, Polarization controllable spatial filter based on azo-dye-doped liquid-crystal film. Optics Letters 30, 1390 (2005). 

A bistable photoswitchable reflective liquid crystal display (PRLCD) based on azo-dye doped liquid crystal (DDLC), which can be written, erased, and rewritten by changing the polarization of a writing laser beam has been demonstrated [2], The mechanism is primarily due to thephotoinduced adsorption of azo-dyes doped in the LC cell. Linearly polarized diode-pumped solid-state laser light with X = 532 nm and an intensity of 150 mW/cm was employed as a writing beam to switch the DDLC sample from a homogeneous texture to a 45° twisted nematic (TN) one (Figure 6.2). 

Figure 6.2 A bistable photoswitchable reflective LCD. POL, DDLC, QWP, and TRM are the linear polarizer, dye-doped liquid crystal, quarter-wave plate, and transflective mirror respectively [2]. Reproduced from T.-H. Lin, H.-C. Jan, S.-Y. Hung, H.-R. Fuh, and A. Fuh, Photoaddressable bistable reflective liquid crystal display. Applied Physics Letters 89, 021116 (2006), American Institute of Physics...

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