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The Ikeda map describes the behavior of an optical field in a ring cavity with a saturable Kerr medium: refractive index n=n0 + n2 I/(1+I/IS), where I is the light intensity. Each time the light travels around the cavity, some is transmitted out and some is added from the pump field. If diffraction is ignored, there are parameter regimes where the system is bistable. In this animation, diffraction effects are included. The pump field has a Gaussian profile, and the frames of the animation represent the output field intensity resolved in the transverse coordinates. Initially the output breaks up into rings which are unstable to a modulation, leading to a pattern of dots and ridges, which continue to evolve into patterns of lower symmetry.

outfile

The Ikeda map describes the behavior of an optical field in a ring cavity with a saturable Kerr medium: refractive index n=n0 + n2 I/(1+I/IS), where I is the light intensity. Each time the light travels around the cavity, some is transmitted out and some is added from the pump field. If diffraction is ignored, there are parameter regimes where the system is bistable. In this animation, diffraction effects are included. The pump field has a Gaussian profile, and the frames of the animation represent the output field intensity resolved in the transverse coordinates. Initially the output breaks up into rings which are unstable to a modulation, leading to a pattern of dots and ridges, which continue to evolve into patterns of lower symmetry.


eye_plasma-an-hlf-12 Main Movie Page / SelfFocus / outfile.png
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Movie specs:
1MB
AVI SWF
800x6000
30.000 fps
625.0 kbyte/s