Open AccessEfficient parametric amplification via simultaneous second harmonic generation
Author(s) -
Noah Flemens,
Nicolas Swenson,
Jeffrey Moses
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.437864
Subject(s) - optics , optical parametric amplifier , femtosecond , picosecond , second harmonic generation , energy conversion efficiency , physics , parametric statistics , nonlinear optics , optical parametric oscillator , quasi phase matching , optoelectronics , laser , materials science , optical amplifier , statistics , mathematics
We introduce a concept for efficient optical parametric amplification (OPA) based on simultaneously phase-matched idler second harmonic generation (SHG), which together exhibits 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%.