Flemens, NoahSwenson, NicolasMoses, Jeffrey2021-09-072021-09-072021-09-07https://hdl.handle.net/1813/109392Please cite as: Noah Flemens, Nicolas Swenson and Jeffrey Moses. 2021. Data from: Efficient Parametric Amplification via Simultaneous Second Harmonic Generation [Dataset]. Cornell University eCommons Digital Repository. https://doi.org/10.7298/sn88-0r98.We introduce a concept for efficient optical parametric amplification (OPA) based on simultaneously phase-matched idler second harmonic generation (SHG), which together exhibit the dynamical behavior of parametric amplification but with damped conversion-back-conversion cycles. This enables amplification efficiency exceeding that of conventional OPA by several-fold for femtosecond and picosecond signal pulses with bell-shaped intensity profiles by allowing a near-uniform spatiotemporal depletion of the pump wave. We develop a Duffing oscillator model that unifies the description of conventional OPA and amplification accompanied by idler photon displacement by either linear absorption or SHG. A spatiotemporal analysis of devices based on birefringent or superlattice quasi-phase matching in common bulk media predicts energy conversion up to 55%.en-USAttribution 4.0 InternationalNonlinear OpticsThree-Wave MixingCascaded Nonlinear ProcessesSecond Harmonic AmplificationEfficient Parametric AmplificationOptical Frequency Conversiondatasethttps://doi.org/10.7298/sn88-0r98