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Electrostrictive contribution to the intensity-dependent refractive index of optical fibers
Optics Letters
|October 31, 2009
Abstract:
We show that electrostriction contributes significantly to self-action effects in optical fibers, adding 19% to the nonlinear refractive index for fields that vary slowly compared with the ~1-ns time scale of the acoustic response. Electrostriction also modifies the tensor nature of the nonlinear-optical response. The electrostrictive nonlinearity is the origin of the observed difference between measurements of n(2) with cw and mode-locked lasers.
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