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Experimental setup used for the measurements of anisotropy. OPA: optical parametric amplifier; ATT: attenuator; Det: detector; and SOP: state of polarization.
(Color online) -scan traces at with a pulse energy of (corresponding peak intensity of ). Top: open-aperture trace ; middle: close-aperture trace with the aperture transmittance ; and bottom: . Blue dots and red curves show experimental data and theoretical fits, respectively. The incident wave is polarized along  direction.
(Color online) Normalized TPA coefficient and Kerr coefficient as a function of sample orientation angle . Blue dots show the experimental data; red curve is a sinusoidal fit; and corresponds to a beam linearly polarized along the [0 1 0] direction.
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