Dependence of the short-wavelength cutoff in the mid-IR pulse spectrum on the interaction lengthстатья
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Аннотация:This paper presents the results of experimental and numerical study of the anti Stokes wing formation and the evolution of the short-wavelength cutoffin the 1900 nm pulse spectrum during its propagation and filamentation in fused silica and calcium fluoride. It is found that during the light bullet formation the short-wavelength cutoff in the supercontinuum spectrum is shifted to the anti-Stokes region with an increase in the nonlinear optical interaction length with the medium. However, change in the short-wavelength cutoff in the formed light bullet spectrum throughout its further propagation is insignificant.