https://doi.org/10.1140/epjst/e2009-01084-8
Variational method in soliton theory
1
Department of Physics, Cochin University of Science and Technology, Cochin, 682022, India
2
Department of Physics, School of Physical, Chemical and Applied Sciences, Pondicherry University, Puducherry, 605014, India
Corresponding authors: cpjisha@gmail.com vck@cusat.ac.in ponzsol@yahoo.com
We have reported earlier the observation of a self-written waveguide inside a bulk methylene blue sensitized poly (Vinyl Alcohol) /Acrylamide photopolymer material [1]. In this work we develop a theoretical model to explain the experimental observation. We reduce the governing equations for the propagation of a low power laser beam through such a medium into the form of nonlinear Schrodinger equation with a cubic-quintic nonlinearity and solve this equation using variational method. It is found that there is agreement between experimental and theoretical results.
© EDP Sciences, Springer-Verlag, 2009
