Abstract

Optical parametric generation in dispersion-engineered waveguides fabricated by proton exchange in periodically poled lithium niobate is numerically investigated as a means for producing widely tunable mid-infrared ultrashort pulses starting from low energy pump pulses at a $1.55\mu \mathrm{m}$ wavelength and with $100\mathrm{fs}$ duration, which are typical parameters of amplified Er-fiber oscillators. Numerical evidence is given about the generation of sub-$100\mathrm{fs}$ nearly transform-limited pulses in the $2.4–4.4\mu \mathrm{m}$ spectral range.

© 2008 Optical Society of America

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