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Laser beam propagation in a saturable absorber

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The effects of the saturation of absorption on the propagation of Gaussian laser beams in an absorber are investigated analytically. Using a dimensionless parameter quantifying the level of saturation, we calculate the modifications in the beam parameters as perturbations from known solutions. are carried out in two directions, covering both low-and high-saturation cases. mates the power transmission for all saturation levels. Numerical results are provided showing the effects of saturation on the spatial beam-spot size variation and the power transmission.

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Optical Soc Amer

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Optics

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Journal Of The Optical Society Of America B-Optical Physics

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10.1364/JOSAB.14.002577

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