Propagation properties of polarized four-petal Gaussian beams along the optical axis of uniaxially anisotropic crystals were investigated. Based on the paraxially vectorial theory of beam propagation, analytic expressions of the diffraction light field were obtained. The effects of the anisotropy on the polarization properties of the diffracted four-petal Gaussian beams have also been explained by numerical method. The results elucidate that the linear polarization state and the symmetry of the incident beams cannot be kept during propagation in anisotropic crystals.
© 2008 Chinese Optics Letters
(050.1940) Diffraction and gratings : Diffraction
(050.1960) Diffraction and gratings : Diffraction theory
(050.1970) Diffraction and gratings : Diffractive optics
(140.0140) Lasers and laser optics : Lasers and laser optics
(260.0260) Physical optics : Physical optics
Bin Tang, Yi Jin, Meiping Jiang, and Xingfang Jiang, "Diffraction properties of four-petal Gaussian beams in uniaxially anisotropic crystal," Chin. Opt. Lett. 6, 779-781 (2008)