Journal
OPTICS LETTERS
Volume 37, Issue 14, Pages 2796-2798Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.002796
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Funding
- Air Force Office of Scientific Research grant [FA9550-10-1-0063]
- Center for Free-Electron Laser Science
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We report a new scheme for direct generation of broadband angular-dispersion-free mid-IR idler pulses via noncollinear optical parametric amplification when group-velocity matched wavelengths cannot be found and the traditional noncollinear geometry fails to increase the phase-matching bandwidth. The scheme does not require any post-amplification idler angular dispersion compensation. We derive and interpret the condition for broadband amplification and absence of idler angular dispersion. A broadband angular-dispersion-free 2.15 mu m idler pulse is generated as an experimental demonstration. We identify the potential of the scheme to generate a broadband 3.5 mu m idler, with a bandwidth supporting a sub-two-cycle pulse. (c) 2012 Optical Society of America
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