Open AccessHigh-efficiency rotating point spread functions
Author(s) -
Sri Rama Prasanna Pavani,
Rafael Piestun
Publication year - 2008
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.16.003484
Subject(s) - optics , point spread function , fourier transform , spatial light modulator , optical transfer function , spatial frequency , physics , rotation (mathematics) , invariant (physics) , optical tweezers , transfer function , computer science , artificial intelligence , electrical engineering , quantum mechanics , mathematical physics , engineering
Rotating point spread functions (PSFs) present invariant features that continuously rotate with defocus and are important in diverse applications such as computational imaging and atom/particle trapping. However, their transfer function efficiency is typically very low. We generate highly efficient rotating PSFs by tailoring the range of invariant rotation to the specific application. The PSF design involves an optimization procedure that applies constraints in the Gauss-Laguerre modal plane, the spatial domain, and the Fourier domain. We observed over thirty times improvement in transfer function efficiency. Experiments with a phase-only spatial light modulator demonstrate the potential of high-efficiency rotating PSFs.