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We compute eigenmodes of spatially-broadband optical parametric amplifier either with fundamental Hermite-Gaussian pump and phase mismatch Δk≠0, or with higher-order pump and Δk=0. Both cases are capable of shifting the maximum gain to higher-order modes.
We compute eigenmodes of spatially-broadband optical parametric amplifier with elliptical Gaussian pump and find compact representation of well-amplified modes by the space of the first few Laguerre- or Hermite-Gaussian modes of appropriate waist.
We demonstrate in-line control of a phase-sensitive fiber-optic parametric amplifier by tuning the pump frequency of a Brillouin fiber pre-amplifier. This approach achieves an order of magnitude faster response compared to piezoelectric control.
We investigate the eigenmodes of a traveling-wave phase-sensitive optical parametric amplifier. We observe gain (deamplification) of 11.4 dB (−7.9 dB) for a Laguerre-Gaussian LG00 mode with >95% overlap with the fundamental eigenmode.
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