TY - JOUR
AU - Fan, Zhenjie
AB - With the increase of the numerical aperture (NA), the polarization of light affects the imaging quality of projection lens more significantly. On the contrary, according to the mask pattern, the resolution of projection lens can be improved by using the polarized illumination. That is to say, using the corresponding polarized beam (or polarization-mode) along with the off-axis illumination will improve the resolution and the imaging quality of the of projection lens. Therefore, the research on the generation of various polarization modes and its conversion methods become more and more important. In order to realize various polarization modes in polarized illumination system, after read a lot of references, we provide a way that fitting for the illumination system with the wavelength of 193nm.Six polarization-modes and a depolarized mode are probably considered. Wave-plate stack is used to generate linearly polarization-mode, which have a higher degree polarization. In order to generate X-Y and Y-X polarization mode, the equipment consisting of four sectors of /2 wave plate was used. We combined 16 sectors of /2 wave plate which have different orientations of the “slow” axis to generate radial and azimuthal polarization. Finally, a multi-polarization control device was designed. Using the kind of multi-polarization control device which applying this method could help to choose the polarization modes conveniently and flexibility for the illumination system.
TI - Research on generating various polarization-modes in polarized illumination system
JF - Proceedings of SPIE
DO - 10.1117/12.2034517
DA - 2013-08-23
UR - https://www.deepdyve.com/lp/spie/research-on-generating-various-polarization-modes-in-polarized-NzYDgn0KK5
SP - 89110K
EP - 89110K-8
VL - 8911
IS - 
DP - DeepDyve
ER -