Waveguide propagation of laser beams in media with saturating non-linearity |
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| Authors: | D P Tewari V K Tripathi J Kamal M S Sodha |
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| Institution: | (1) Physics Department, Indian Institute of Technology, New Delhi-29, India;(2) Electrophysics Advanced Study Group, Drexel University, 19104 Philadelphia, Pa., USA |
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| Abstract: | The waveguide propagation of Gaussian laser beams in dielectric media with saturating non-linearity has been investigated analytically, using two profiles for the dependence of the dielectric constant on intensity. An expression for the radius of the uniform wave-guide, corresponding to a given power of the beam, has been obtained and the existence of a minimum radius, corresponding to an optimum power, has been predicted. For high power laser beams, oscillatory waveguides have been obtained; for very high powers the oscillations of the radius of the waveguide are small.Work supported by NOAA, USA.Work supported by CSIR, India.Work supported by NSF, USA; on sabbatical leave from IIT, Delhi. |
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