Abstract

Based on the modal analysis method, a model describing the output beam of a diode pumped solid state (DPSS) laser emitting a multimode beam is presented. Measuring the output beam profiles in near-field, the individual modes as well as their contributions are determined. To this purpose, the superposition principle and the angular spectrum method are employed to predict the beam profile along the propagation axis and at far-field.

© 2017 SPIE

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