TY - JOUR

T1 - Generation of few-cycle pulses in media with alternating sign of effective cubic nonlinearity

AU - Frolov, S. A.

AU - Trunov, V. I.

AU - Bagayev, S. N.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - An original technique is developed for spectral broadening of femtosecond pulses with compensation for the nonlinear spatial phase during the propagation through nonlinear media with effective cubic nonlinearity of different signs. It was shown that in the region of 1.5 μm, the proposed scheme with BBO crystals at the first stage and NaCl at the second stage allows, using chirped mirrors, the formation of few-cycle pulses of about 7 fs duration with a small B-integral. The possibility of focusing of pulses compressed in the proposed scheme with a large Strehl ratio is demonstrated.

AB - An original technique is developed for spectral broadening of femtosecond pulses with compensation for the nonlinear spatial phase during the propagation through nonlinear media with effective cubic nonlinearity of different signs. It was shown that in the region of 1.5 μm, the proposed scheme with BBO crystals at the first stage and NaCl at the second stage allows, using chirped mirrors, the formation of few-cycle pulses of about 7 fs duration with a small B-integral. The possibility of focusing of pulses compressed in the proposed scheme with a large Strehl ratio is demonstrated.

KW - few-cycle pulses

KW - nonlinear compression

KW - cubic nonlinearity

KW - negative cascaded quadratic nonlinearity

KW - multi-element spectral broadening

KW - Strehl ratio

KW - LASER-PULSES

KW - COMPRESSION

KW - POWER

UR - http://www.scopus.com/inward/record.url?scp=85085368848&partnerID=8YFLogxK

U2 - 10.1070/QEL17311

DO - 10.1070/QEL17311

M3 - Article

AN - SCOPUS:85085368848

VL - 50

SP - 343

EP - 349

JO - Quantum Electronics

JF - Quantum Electronics

SN - 1063-7818

IS - 4

ER -