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J Opt Soc Am A Opt Image Sci Vis. 2006 Aug;23(8):1946-50.

Propagation of elliptical Gaussian beams in apertured and misaligned optical systems.

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Department of Physics, Zhejiang University, Hangzhou, China.


On the basis of the fact that a hard-edged elliptical aperture can be expanded approximately as a finite sum of complex Gaussian functions in tensor form, an analytical propagation expression for an elliptical Gaussian beam (EGB) through a misaligned optical system with an elliptical aperture is derived by use of vector integration. The approximate analytical results provide more convenience for studying the propagation and transformation of EGBs than the usual way by using a diffraction integral directly, and the efficiency of numerical calculation is improved. Some numerical simulations are illustrated for the propagation properties of EGBs through apertured optical transforming systems with misaligned thin lenses.

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