Transformation and spatial shaping of partially coherent cosh-Gaussian beams through an astigmatic lens
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- 作者：Changwei Li ; BaidaLü
- 关键词：Partially coherent cosh-Gaussian (ChG) beam ; Spatial beam shaping ; Astigmatic lens
- 刊名：Optik - International Journal for Light and Electron Optics
- 出版年：2009
- 出版时间：April 2009
- 年：2009
- 卷：120
- 期：8
- 页码：374-378
- 全文大小：252 K
文摘
Based on the propagation law of partially coherent beams, the closed-form propagation expression for partially coherent cosh-Gaussian (ChG) beams through an astigmatic lens is derived. The transformation and spatial shaping of partially coherent ChG beams through the astigmatic lens are studied and illustrated by numerical examples. It is shown that a suitable choice of the spatial coherence parameter and/or astigmatic coefficient, different beam profiles, such as Gaussian-like, flat-topped and bottle beam profiles, and beam profile with a central dip, at the geometric focal plane and at a certain plane are realizable.