The concept and the generation of polarized pseudonondiffracting beams (PNDB’s) from polarization-selective diffractive phase elements (DPE’s) are presented for what we believe is the first time in a monochromatic illuminating system. The polarized PNDB’s behave as segmented almost constant axial-intensity distributions with individual different polarization states in different segments. The pure polarization state in each segment can be arbitrarily preset. The design of polarization-selective DPE’s is achieved with the use of the conjugate-gradient method. The simulation results show that the DPE’s we designed can successfully implement the desired polarization modulation. Furthermore the PNDB’s characteristics of axial-intensity uniformity and beamlike shape are well achieved with the DPE’s we designed.
© 1999 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1970) Diffraction and gratings : Diffractive optics
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
Original Manuscript: December 14, 1998
Published: May 10, 1999
Bi-Zhen Dong, Rong Liu, and Jian Wang, "Polarized pseudonondiffracting beams generated by polarization-selective diffractive phase elements," Appl. Opt. 38, 3089-3092 (1999)