Laser beam shaping with an ellipsoidal lens

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• 作者：Daxin Luo ; ^{luodaxin@gmail.com} ; Baiqin Zhao ; Xuelei Chen
• 关键词：Beam shaping ; Semiconductor laser ; Ellipsoidal lens ; Geometrical optics
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：124
• 期：7
• 页码：565-569
• 全文大小：621 K

文摘

This paper presents a semiconductor laser beam shaping system that can collimate the irradiance profile effectively by using an ellipsoidal lens. Geometrical optics analysis based on the ray tracing method is done and the formulas to calculate the shape of ellipsoidal lens are given. Both the theoretical and experimental result show that the laser beam system works effectively; the divergence angle is reduced to less than 1¡ã in the fast-axial direction. By using epoxy resin, this shaper collimates a semiconductor laser beam and packages the laser diode (LD) at the same time, which simplifies the manufacturing process and greatly reduces the LD volume. Because of the small volume, low-cost, high rigidity and easy fabrication, the shaper is of great value in the field of semiconductor laser diode applications.