Phase masks for electron microscopy fabricated by thermal scanning probe lithography.
Sign Up to like & getrecommendations! Published in 2019 at "Micron"
DOI: 10.1016/j.micron.2019.102753
Abstract: Nano-structured phase masks offer intriguing possibilities in electron-beam shaping. The fabrication of such phase masks is typically achieved by focused (Ga+-)ion beam milling of thin membranes. To overcome the problem of Ga implantation in the… read more here.
Keywords: phase; scanning probe; phase masks; microscopy ... See more keywords
Interference-based multiple-image encryption using binary phase masks
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2018.01.012
Abstract: Abstract We propose a new scheme to encrypt multiple images simultaneously using two-dimensional binary phase masks. Each of the original greyscale images is first decomposed into two pure phase-only images, which corresponds to the reverse… read more here.
Keywords: phase; image; phase masks; binary phase ... See more keywords
Binary phase masks for easy system alignment and basic aberration sensing with spatial light modulators in STED microscopy
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-15967-5
Abstract: The use of binary phase patterns to improve the integration and optimization of spatial light modulators (SLM) in an imaging system, especially a confocal microscope, is proposed and demonstrated. The phase masks were designed to… read more here.
Keywords: phase; system; microscopy; phase masks ... See more keywords
Experimental validation of hybrid optical–digital imaging system for extended depth-of-field based on co-optimized binary phase masks
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.11.113107
Abstract: Abstract. We experimentally investigate the performance of co-optimized hybrid optical–digital imaging systems based on binary phase masks and digital deconvolution for extended depth-of-field (DoF) under narrow-band illumination hypothesis. These systems are numerically optimized by assuming… read more here.
Keywords: hybrid optical; extended depth; optical digital; binary phase ... See more keywords
Theoretical and experimental analysis of co-designed binary phase masks for enhancing the depth of field of panchromatic cameras
Sign Up to like & getrecommendations! Published in 2021 at "Optical Engineering"
DOI: 10.1117/1.oe.60.3.033101
Abstract: Abstract. We investigate the depth of field (DoF) enhancing capacity of binary annular phase masks embedded in panchromatic imaging systems. We first demonstrate with numerical simulations and real-world imaging experiments that phase masks optimized for… read more here.
Keywords: illumination; depth field; wide spectrum; phase masks ... See more keywords
Optimized pupil-plane phase masks for high-contrast imaging.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.005688
Abstract: A differential evolution algorithm (DEA) is shown to improve the design of phase-only pupil plane masks for imaging in the presence of a high-intensity point source. Strehl and suppression ratio metrics for various phase basis… read more here.
Keywords: phase; phase masks; optimized pupil; pupil plane ... See more keywords
Complex phase masks for OH suppression filters in astronomy: part I: design.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.402989
Abstract: The design of a complex phase mask (CPM) for inscribing multi-notch fiber Bragg grating filters in optical fibers for OH suppression in astronomy is presented. We demonstrate the steps involved in the design of a… read more here.
Keywords: phase; design complex; astronomy; phase masks ... See more keywords
Transversal and axial modulation of axicon-generated Bessel beams using amplitude and phase masks for glass processing applications.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.447035
Abstract: The control of laser-induced microcracks in the volume of transparent materials is essential for scribing processes. In this paper, we investigate the effect of various amplitude and single-level phase masks on both transverse and axial… read more here.
Keywords: phase masks; bessel beams; axicon generated; generated bessel ... See more keywords
Spectrally exclusive phase masks for wavefront coding.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.408640
Abstract: The use of phase masks is necessary for wavefront coding, and these are often based on optical path differences. However, the optical dispersion constrains the resulting device to operate within a restricted spectral bandwidth. Here… read more here.
Keywords: masks wavefront; phase; phase masks; wavefront coding ... See more keywords