Phase Mask-Based Multimodal Superresolution Microscopy [PDF]
Photonics, 2017 We demonstrate a multimodal superresolution microscopy technique based on a phase masked excitation beam in combination with spatially filtered detection.
Ryan Beams +3 more
doaj +5 more sources
Multiplexed vortex beam-based optical tweezers generated with spiral phase mask [PDF]
iScience, 2023 Summary: The design and implementation of a multiplexed spiral phase mask in an experimental optical tweezers setup are presented. This diffractive optical element allows the generation of multiple concentric vortex beams with independent topological ...
Francisco M. Muñoz-Pérez +5 more
doaj +2 more sources
Extinction controlled adaptive phase-mask coronagraph [PDF]
Astronomy & Astrophysics, 2012 Context. Phase-mask coronagraphy is advantageous in terms of inner working angle and discovery space. It is however still plagued by drawbacks such as sensitivity to tip-tilt errors and chromatism.
Bourget, P. +3 more
core +6 more sources
Experimental Analysis of Bragg Reflection Peak Splitting in Gratings Fabricated Using a Multiple Order Phase Mask [PDF]
Sensors, 2019 We performed an experimental analysis of the effect of phase mask alignment on the Bragg grating reflection spectra around the wavelength of λB = 1560 nm fabricated in polymer optical fiber by using a multiple order phase mask.
Gabriela Statkiewicz-Barabach +3 more
doaj +2 more sources
EFFECT OF OPTICAL FIBER HYDROGEN LOADING ON THE INSCRIPTION EFFICIENCY OF CHIRPED BRAGG GRATINGS BY MEANS OF KrF EXCIMER LASER RADIATION [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2016 Subject of Research.We present comparative results of the chirped Bragg gratings inscription efficiency in optical fiber of domestic production with and without low-temperature hydrogen loading. Method.
Sergey V. Varzhel +3 more
doaj +1 more source
INSCRIPTION PROCESS RESEARCH AND OPTIMIZATION FOR SUPERIMPOSED FIBER BRAGG GRATINGS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2017 Subject of Research. The paper presents the study of inscription process distinctive features for superimposed fiber Bragg gratings. We analyzed spectral characteristics changes of superposition segregated gratings that appear during inscription of ...
Kirill A. Konnov +6 more
doaj +1 more source
Phase Mask Pinholes as Spatial Filters for Laser Interference Lithography
Advanced Photonics Research, 2023 Laser resonators have outputs with Gaussian spatial beam profiles. In laser interference lithography (LIL), using such Gaussian‐shaped beams leads to an inhomogeneous exposure of the substrate. As a result, dimensions of lithography‐defined features vary
Giovanna Capraro +4 more
doaj +1 more source
Improved Exponential Phase Mask for Generating Defocus Invariance of Wavefront Coding Systems
Applied Sciences, 2022 Wavefront coding is an effective way to extend the depth of field of optical imaging systems. The invariant defocusing imaging feature can be obtained by adding a phase mask with a suitable form to the aperture of a typical optical system.
Jing Sheng +4 more
doaj +1 more source
PROTECTIVE COATINGS OF FIBER BRAGG GRATING FOR MINIMIZING OF MECHANICAL IMPACT ON ITS WAVELENGTH CHARACTERISTICS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2015 The paper deals with the scheme for the study of the Bragg wavelength shift dependence on the applied tensile force. Samples of fiber Bragg gratings with different coatings have been studied: the restored acrylate coating, the heatshrinkable fusion ...
A. S. Munko +3 more
doaj +1 more source
Applied Sciences, 2023 Phase mask optimization is one of the critical steps in designing a wavefront coding system to extend the depth of field (DoF). As a classical phase mask, a cubic phase mask was taken as an example. An improved particle swarm optimization (PSO) algorithm
Zeyu Huang +4 more
doaj +1 more source