Abstract
We present detailed calculations of the temporal dependence of beam fanning obtained by numerical solutions of the paraxial wave equation for the optical beam, and the equation for the time dependence of the refractive index perturbation produced by interference between the incident beam and radiation scattered by imperfections in the crystal. Our calculations extend the results for steady- state fanning1 to temporal evolution and include the effects of absorption and scattering distributed throughout the crystal.
© 1993 Optical Society of America
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