2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/135790Self-compression of femtosecond laser pulses and more than an order of magnitude increase of the peak intensity is found in a positive dispersion medium in low dispersion regime based on the (3+1)-dimensional nonlinear Schr{ö}dinger equation. A method of high-intensity femtosecond pulse formation can be developed on that basis.4 pages, miktex, 3 figuresOpticsComputational Physicstext