Simple mathematical model for designing laser diode focusing optics with a large numerical aperture

Haiyin Sun

doi:10.1117/1.OE.53.10.105105

30 October 2014 Simple mathematical model for designing laser diode focusing optics with a large numerical aperture

Haiyin Sun

Author Affiliations +

Optical Engineering, Vol. 53, Issue 10, 105105 (October 2014). https://doi.org/10.1117/1.OE.53.10.105105

Abstract

A simple mathematical model is derived for conveniently designing laser diode focusing optics with a large numerical aperture. The astigmatism of laser diode beams and the lens truncation effects are considered in the model. The linearly polarized nature of laser diode beams is also included. Two design examples using this model are presented. Design results show that the lens truncation will increase the size of the focused spot and the value of the M² factor, and the lens truncation caused a focal shift, which is not enough to correct laser diode beam astigmatism.

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Haiyin Sun "Simple mathematical model for designing laser diode focusing optics with a large numerical aperture," Optical Engineering 53(10), 105105 (30 October 2014). https://doi.org/10.1117/1.OE.53.10.105105

Published: 30 October 2014

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