of optical pulse
to the phase velocity 
of terahertz pulse. The conditions
of soliton stability in bulk medium are discussed. 2012, Vol.15, No.4, pp.387-394
The possibility of generation of new type of optical-terahertz
solitons by resonant optical rectification in quadratically
nonlinear media is examined. The existence of various types of
solitons is analyzed. Bound solitonic state of an optical laser
pulse and a terahertz few cycle pulse becomes possible under
condition of equality of the group velocity of optical pulse
to the phase velocity of terahertz pulse. The conditions
of soliton stability in bulk medium are discussed.
Key words:
quadratically nonlinear media, parametric soliton
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