Terahertz Solitons in Condensed Media

Soliton mode of terahertz radiation generation using picosecond laser pulses with tilted wave fronts

“…Substituting (20) into equation ( 17) and taking into account the inequality n 2 T /c 2 ≫ γ/τ 2 p , we have approximately…”

“…Equating the right-hand sides of these evaluation expressions to each other, we have l T = n T τ 3 p /cγ. Substituting expression (20), we obtain…”

“…When studying the self-consistent dynamics of optical and generated terahertz signals, it is possible to identify the soliton modes of generation [19][20][21]. In the case of collinear propagation of optical and terahertz pulses in the absence of the tilt of wave fronts (θ = 0), the soliton process of generation is described by the Yajima-Oikawa system of equations for the envelope of optical component and for the electric field of terahertz component [22].…”

On the nonlinear optics of extremely short pulses

“…It is very difficult to satisfy this condition in real crystals, since usually ν g > c/n T . Therefore, one has to use optical pulses with oblique wave fronts [53][54][55][56][57]. The phase and group wave fronts of such pulses are not parallel to each other, but form an angle ϕ between them.…”

Optical–Terahertz Solitons with Tilted Fronts

“…One of the most efficient methods for the generation of terahertz radiation is based on the optical rectification of subpicosecond and femtosecond laser pulses in crystals with quadratic optical nonlinearity [1][2][3][4][5][6].…”