Abstract
Self-diffraction with the appearance of higher diffraction orders is discovered when writing a grating with a single sub-100 fs pulse in a nominally undoped sample. The short time of grating development, dependence of diffraction efficiency on the recording light intensity, correlation of wavelength dependence of efficiency with the spectrum of the two-photon absorption (TPA) constant, and a phase shift of the diffracted beam allow for attributing the recorded grating to a dynamic amplitude grating of TPA.
© 2012 Optical Society of America
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