Electro-optic modulators using ferroelectric liquid-crystal technology have generally been limited to use with polarized light. It is possible, however, to construct a diffractive array of ferroelectric liquid-crystal phase modulators that can act as a shutter for unpolarized light. We have built two types of polarization-independent diffractive shutter based on this principle. We describe their principles of operation and performance.
© 1991 Optical Society of America
M. J. O’Callaghan and M. A. Handschy, "Diffractive ferroelectric liquid-crystal shutters for unpolarized light," Opt. Lett. 16, 770-772 (1991)