5 A theoretical study on modulational instability in relaxing saturable nonlinear optical media

Kuppuswamy Porsezian and K. Nithyanandan

5.1 Introduction

In classical optics, the intensity dependent process in the optical system seeds the emergence to the field of nonlinear optics [1], which deserves considerable attention both fundamental and application perspectives. The interaction between the linear dispersion due to the frequency dependent refractive index and the nonlinearity due to the intensity dependent refractive index admits interesting features which have aroused a great deal of interest for more than five decades. The stability of an input light beam under various physical situations is one of the most exciting issues of modern ...

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