Lowe, Eric R.Stoll, StefanKestner, Jason2024-07-262024-07-262024-11-19Lowe, Eric R., Stefan Stoll, and J. P. Kestner. “Optimizing EPR Pulses for Broadband Excitation and Refocusing.” Journal of Magnetic Resonance 369 (December 1, 2024): 107807. https://doi.org/10.1016/j.jmr.2024.107807.http://hdl.handle.net/11603/35150In this paper, we numerically optimize broadband pulse shapes that maximize Hahn echo amplitudes. Pulses are parameterized as neural networks (NN), nonlinear amplitude limited Fourier series (FS), and discrete time series (DT). These are compared to an optimized choice of the conventional hyperbolic secant (HS) pulse shape. A power constraint is included, as are realistic shape distortions due to power amplifier nonlinearity and the transfer function of the microwave resonator. We find that the NN, FS, and DT parameterizations perform equivalently, offer improvements over the best HS pulses, and contain a large number of equivalent optimal solutions, implying the flexibility to include further constraints or optimization goals in future designs.11 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Physics - Chemical PhysicsQuantum PhysicsText