Theoretical study of micro-optical structure fabrication based on sample rotation and two-laser-beam interference
Chen Yizhen1, Wang Xiangxian1, †, Wang Ru1, Yang Hua1, Qi Yunping2
       

(color online) (a) 2D optical field distribution for double exposure with different laser wavelengths (325 nm and 442 nm), where the sample rotation angle is 90°. (b) Quadruple exposure, where the wavelength of each exposure is 325 nm, 442 nm, 325 nm, and 442 nm respectively. The sample is rotated by 45° after each exposure.