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Study of stress-induced birefringence in an inhomogeneously pumped laser rod with spatial and temporal resolution

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Abstract

A general method to study the birefringence induced under laser pumping is presented. The method was tested on an Nd:Phosphate glass sample that is transversally and inhomogeneously pumped by a pulsed laser diode. Measurements to resolve the spatial and temporal stress-induced birefringence distribution are compared to a numerical model simulating the experimental setup. A quantitative agreement between measurement and simulation was found, showing that unmeasurable physical processes can be known in general cases. To compare the measurement and the simulation, a new formalism to extract the induced birefringence from initial and total birefringence measurement is presented.

© 2019 Optical Society of America

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