[6] Kirby A K,Love G D. Fast,large and controllable phase modulation using dual-frequency liquid crystals [J]. Optics Express(S1094-4087),2004,12:1470-1475.
[7] Konshinaa E A,Kostomarov D S. Phase modulation of light in a two-frequency nematic liquid crystal [J]. J. Opt. Technol(S1070-9762),2007,74:720-722.
[8] Jewell S A,Sambles J R. Optical characterization of a dual-frequency hybrid aligned nematic liquid crystal cell [J]. Optics Express(S1094-4087),2005,13:2627-2633.
[10] LI Yu-bo,ZHOU Qiang,WU Shu-gao,et al. An Optical Circular-Polarization Modulator Based Liquid Crystal [J]. J. Optoelectronics·Laser(S1005-0086),2006,17:783-786.
[11] Baba J S,Boudreaux P R. Wavelength,temperature,voltage dependent calibration of a nematic liquid crystal multispectral polarization generating device [J]. Applied Optics (S0003-6935),2007,46:5539-5544