Andy Y G FuhSummaryAffiliation: National Cheng Kung University Country: Taiwan Publications
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Publications
Polarization-independent liquid crystal lens based on axially symmetric photoalignmentAndy Y G Fuh
Department of Physics, Institute of Electro optical Science and Engineering, and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
Opt Express 19:2294-300. 2011..The focal length of the polarization-independent liquid crystal lens can be controlled by applying various voltages. The device is simple to fabricate, and very convenient to use. It therefore has great practical potential...
Polarization converters based on axially symmetric twisted nematic liquid crystalShih Wei Ko
Institute of Electro optical Science and Engineering, National Cheng Kung University, Tainan, Taiwan 701, China
Opt Express 18:3601-7. 2010..A design for converting linear polarized light to axially symmetric circular polarized light is also demonstrated...
Electrical control of shape of laser beam using axially symmetric liquid crystal cellsShih Wei Ko
Institute of Electro optical Science and Engineering, National Cheng Kung University, Tainan, Taiwan
Appl Opt 51:1540-5. 2012..The tenability of beam shape of light with a wavelength of 1064 nm, which is commonly used in biomedical applications, is also demonstrated...
Axially symmetric polarization converters based on photo-aligned liquid crystal filmsYing Yu Tzeng
Institute of Electro optical Science and Engineering, National Cheng Kung University, Tainan, Taiwan 701, ROC
Opt Express 16:3768-75. 2008..Additionally, the spiral degree of the axially symmetric vortical polarization can be controlled by varying the polarization of the pumping light and the simulation results agree well with the experiment...
Color cone lasing emission in a dye-doped cholesteric liquid crystal with a single pitchC R Lee
Institute of Electro Optical Science and Engineering and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan, Taiwan 701, Republic of China
Opt Express 17:12910-21. 2009..Simulation results of dispersion relations at different oblique angles using Berreman's 4X4 matrix method agrees closely with experimental results. Some unique and important features of the CCLE are identified and discussed...
Optically-tunable beam steering grating based n azobenzene doped cholesteric liquid crystalHung Chang Jau
Institute of Electro optic Science and Engineering, National Cheng Kung University, Tainan, Taiwan
Opt Express 18:17498-503. 2010..Combining the photoisomerization effect with electrical effect, the CLC beam-steering device provides a steering angle of approximately 19 degrees. The tuning is continuous and could be completed within a few seconds...
Measurement of helical twisting power based on axially symmetrical photo-aligned dye-doped liquid crystal filmShih Wei Ko
Institute of Electro optical Science and Engineering, National Cheng Kung University, Tainan, Taiwan 701, ROC
Opt Express 17:15926-31. 2009..The pitch and helical twisting power can be obtained by measuring the rotation angle of the disclination line in chrial doped liquid crystal. This method is independent of cell gap and provide an error below 0.5%...
