Results 1 to 10 of about 560,798 (337)
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
IEEE Photonics Journal, 2017 A novel optical multiple-image hiding method is proposed based on two cascaded free-space propagation transforms in this paper. With the use of the structured phase mask in the phase retrieval algorithm, a plain image is encoded to only one statistically
Liansheng Sui, Xiao Zhang, Ailing Tian
doaj +2 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
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
Multiplexed holographic aperture masking with liquid-crystal geometric phase masks [PDF]
Optical and Infrared Interferometry and Imaging VI, 2018 Presented at the 2018 SPIE Astronomical Telescopes + Instrumentation, Austin, Texas ...
Peter Tuthill +7 more
openalex +4 more sources
Numerical Analysis of Mask-Based Phase Reconstruction in Phaseless Spherical Near-Field Antenna Measurements [PDF]
SensorsPhase-retrieval problems are employed to tackle the challenge of recovering a complex signal from amplitude-only data. In phaseless spherical near-field antenna measurements, the task is to recover the complex coefficients describing the radiation ...
Adrien A. Guth +3 more
doaj +2 more sources
Signum phase mask differential microscopy [PDF]
, 2023 We propose and experimentally demonstrate a differential microscopy method to obtain simultaneous amplitude, phase, and quantitative polarization gradient imaging in a single experimental embodiment. A full-field optical spatial differentiator is achieved in a relatively simple setup by placing a glass cover slip as a Signum phase mask in the Fourier ...
Jeeban Kumar Nayak +3 more
openalex +3 more sources
PhlatCam: Designed Phase-Mask Based Thin Lensless Camera. [PDF]
IEEE Trans Pattern Anal Mach Intell, 2020 Boominathan V +3 more
europepmc +3 more sources
Dynamic Infrared Thermographic Evaluation of Facial Thermal Response During Face Mask Wearing [PDF]
SensorsThe study proposes a sensor-based experimental protocol for quantifying dynamic facial temperature changes during face mask use by means of infrared thermography (IRT).
Radostina A. Angelova, Maria Dimova
doaj +2 more sources