Limits to compression with cascaded quadratic soliton compressors
Date
2008-02-25
Authors
Bache, M.
Bang, Ole
Moses, J
Wise, F W
Krolikowski, Wieslaw
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Society of America
Abstract
We study cascaded quadratic soliton compressors and address
the physical mechanisms that limit the compression. A nonlocal model is
derived, and the nonlocal response is shown to have an additional oscillatory
component in the nonstationary regime when the group-velocity mismatch
(GVM) is strong. This inhibits efficient compression. Raman-like perturbations
from the cascaded nonlinearity, competing cubic nonlinearities,
higher-order dispersion, and soliton energy may also limit compression,
and through realistic numerical simulations we point out when each factor
becomes important. We find that it is theoretically possible to reach the
single-cycle regime by compressing high-energy fs pulses for wavelengths
λ = 1.0−1.3 μm in a β-barium-borate crystal, and it requires that the system
is in the stationary regime, where the phase mismatch is large enough
to overcome the detrimental GVM effects. However, the simulations show
that reaching single-cycle duration is ultimately inhibited by competing
cubic nonlinearities as well as dispersive waves, that only show up when
taking higher-order dispersion into account.
Description
Keywords
pulse compression, ultrafast nonlinear optics, pulse propagation and temporal solitons, harmonic generation and mixing, femtosecond phenomena
Citation
Optics Express 16.5 (2008): 3273-3287
Collections
Source
Optics Express
Type
Journal article
Book Title
Entity type
Access Statement
License Rights
Restricted until
Downloads
File
Description