Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10727720 | Physics Letters A | 2014 | 8 Pages |
Abstract
A novel symmetrical positive-negative annular phase object (PNA-PO) is proposed in the 4f coherent imaging system and a third-order nonlinear refraction of the material is measured. By decomposing the normalized incident field passing through the PNA-PO into three top-hat beams with various radii and phase delays, and by using some applicable approximations, analytical solution of the phase contrast signal ÎT is revealed. Furthermore, variations of the analytical solution and numerical simulation of ÎT as a function of the on-axis nonlinear phase shift Ï0 are shown. CS2 as a standard sample is performed using a PNA-PO to illustrate the feasibility and predominance of our system.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Zhongquan Nie, Zhongguo Li, Xueru Zhang, Guanghong Ao, Guang Shi, Yuxiao Wang, Yinglin Song,