TY - JOUR AU - Ovechko, V. S. AU - Myhashko, V. P. PY - 2018/07/12 Y2 - 2024/03/28 TI - Spectral Particularities of Femtosecond Optical Pulses Propagating in Dispersive Medium JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 63 IS - 6 SE - Optics, atoms and molecules DO - 10.15407/ujpe63.6.479 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018006 SP - 479 AB - <p>We have proposed a refined solution of the wave equation for a dispersive medium without restriction on the duration of an optical pulse. We apply a series of elementary wave packages (EWP) to the representation of superwideband signals (fs pulse). We investigate peculiarities of the propagation of waves with low and high frequencies through the one-resonance medium. We show the existence of a “precursor” for fs optical pulses. We propose a formula for the optical signal velocity (OSV). Its value does not exceed the light velocity in vacuum. We have designed a method of adaptation of EWP-pulses to time-domain spectroscopy.</p> ER -