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Gaussian beam focused by thermal lens

2022-08-11 01:55:00 【Bonnie1985119】

Thermal lensing describes the inhomogeneity of the refractive index of a medium caused by the thermal gradient of a high-power laser beam.For Gaussian beams with specific parameters, the refractive index is mathematically expressed as a function of temperature and input power.[W. Koechner, Appl. Opt. 9, 2548–2553 (1970)].This use case shows the change in the focal length of the thermal lens, and the change in the diameter of the focused beam as the input power changes.This use case is published in [H. Zhong, J. Opt. Soc. Am. A35].