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Abstract Spatiotemporal control of laser pulses at relativistic field strengths is a long-standing goal in laser–plasma interactions and extreme-field science. Helical wavepackets that couple spectral and orbital angular momentum (OAM) modes produce rotating intensity distributions, often referred to as light springs.
Abstract To fabricate high-precision and accurate optics relative to the optical design surface, a high level of deterministic control of material removal (i.e., the tool influence function, TIF) during subaperture tool polishing is required. In this study, a detailed analysis of the pressure distribution, which is a key component of the TIF, has been performed using finite element analysis to couple together solid mechanics and fluid dynamics.
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