Abstract
We experimentally observe dispersive waves in the anomalous
dispersion regime of a beta-barium-borate (BBO) crystal,
induced by a self-defocusing few-cycle temporal soliton.
Together the soliton and dispersive waves form an energetic
octave-spanning supercontinuum. The soliton was excited in
the normal dispersion regime of BBO through a negative
cascaded quadratic nonlinearity. Using pump wavelengths
from 1.24 to 1.4 μm, dispersive waves are found from
1.9 to 2.2 μm, agreeing well with calculated resonant phasematching
wavelengths due to degenerate four-wave mixing
to the soliton. We also observe resonant radiation from nondegenerate
four-wave mixing between the soliton and a
probe wave, which was formed by leaking part of the pump
spectrum into the anomalous dispersion regime. We confirm
the experimental results through simulations.
Original language | English |
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Journal | Optics Letters |
Volume | 40 |
Issue number | 18 |
Pages (from-to) | 4257-4260 |
ISSN | 0146-9592 |
DOIs | |
Publication status | Published - 2015 |