TY - JOUR
T1 - Generation of multiple ultrashort temporal solitons in a third-order nonlinear composite medium with self-focusing and self-defocusing nonlinearities
AU - Siqueira, André C.A.
AU - Falcão-Filho, Edilson L.
AU - Malomed, Boris A.
AU - De Araújo, Cid B.
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/6
Y1 - 2023/6
N2 - Theoretical consideration of the propagation of femtosecond Gaussian pulses in a one-dimensional composite medium, consisting of alternating self-focusing and self-defocusing waveguide segments with normal group-velocity dispersion, predicts the generation of trains of bright solitons when an optical pulse first propagates in the self-focusing segment, followed by the self-defocusing one. The multiple temporal compression process, based on this setting, offers a method for controllable generation of multiple ultrashort temporal solitons. Numerical solutions of the generalized nonlinear Schrödinger equation modeling this system demonstrate that the intrapulse Raman scattering plays a major role in the temporal and spectral dynamics. Collisions between ultrashort solitons with different central wavelengths are addressed too. The paper provides a procedure for producing controllable trains of ultrashort temporal solitons by incident optical pulses propagating in a composite medium.
AB - Theoretical consideration of the propagation of femtosecond Gaussian pulses in a one-dimensional composite medium, consisting of alternating self-focusing and self-defocusing waveguide segments with normal group-velocity dispersion, predicts the generation of trains of bright solitons when an optical pulse first propagates in the self-focusing segment, followed by the self-defocusing one. The multiple temporal compression process, based on this setting, offers a method for controllable generation of multiple ultrashort temporal solitons. Numerical solutions of the generalized nonlinear Schrödinger equation modeling this system demonstrate that the intrapulse Raman scattering plays a major role in the temporal and spectral dynamics. Collisions between ultrashort solitons with different central wavelengths are addressed too. The paper provides a procedure for producing controllable trains of ultrashort temporal solitons by incident optical pulses propagating in a composite medium.
UR - http://www.scopus.com/inward/record.url?scp=85163891894&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.107.063519
DO - 10.1103/PhysRevA.107.063519
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AN - SCOPUS:85163891894
SN - 2469-9926
VL - 107
JO - Physical Review A
JF - Physical Review A
IS - 6
M1 - 063519
ER -