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Spatial distribution clamping of discrete spatial solitons due to three photon absorption in AlGaAs waveguide arrays
Darren D Hudson1, J Nathan Kutz, Thomas R Schibli
1JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309, USA.
Optics Express
|February 15, 2012
Abstract:
We observe clamping of the output spatial light distribution of a waveguide array. Using a chirped pulse amplifier we reach peak intensities in the waveguides of ~24 GW/cm2. At this level, three photon absorption in the AlGaAs material clamps the discrete spatial soliton to a set distribution. Further increase in intensity does not change the distribution.
