J. Asada et S. Nishiwaki, OPTICAL-ELEMENT CONVERTING LINEAR-POLARIZATION INTO CIRCULAR-TANGENTIAL POLARIZATION, Applied optics, 34(22), 1995, pp. 4768-4771
A new optical element capable of converting linear polarization into c
ircular-tangential polarization (i.e., the electric vector is along th
e tangential direction to a circle) is proposed and demonstrated. The
conversion characteristics of the fabricated element are evaluated, an
d the magnitude of aberration produced by the element is shown to be i
nsignificant.