On-axis diffraction-limited design of bi-parabolic singlet lenses
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DOI: 10.1016/j.ijleo.2019.162970
Abstract: Abstract A lens limited by diffraction and having two parabolic surfaces is presented. The knowledge of the following parameters: object distance, relative refractive index, lens thickness, and image distance, enables to analytically calculate the parabolic… read more here.
Keywords: design parabolic; parabolic singlet; diffraction limited; limited design ... See more keywords
Corrected Off-axis Diffraction Holograms for Electrons
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DOI: 10.1017/s1431927620014634
Abstract: The transverse wavefunction of a free electron can be structured with the use of off-axis diffraction holograms [1, 2]. Uses for structured electron wavefronts require exceedingly precise control of over this degree of freedom [3,… read more here.
Keywords: diffraction holograms; electron; axis diffraction; diffraction ... See more keywords