Phase compensation in digital holographic microscopy using a quantitative evaluation metric
Sign Up to like & getrecommendations! Published in 2019 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.08.061
Abstract: Abstract This study presents a simple metric to quantitatively evaluate the compensation of phase distortions in digital holographic microscopy. The metric calculates the difference between the minimum and maximum values in an unwrapped phase image.… read more here.
Keywords: microscopy; holographic microscopy; digital holographic; phase compensation ... See more keywords
Numerical study on sector-vortex phased irradiation method using annular array transducer in High-Intensity Focused Ultrasound treatment.
Sign Up to like & getrecommendations! Published in 2021 at "Ultrasonics"
DOI: 10.1016/j.ultras.2021.106464
Abstract: Sector-vortex phased irradiation from annular array transducer was numerically studied with breast model constructed from MRI data of real patient. Phase compensation (PC) based on time reversal pre-computation was applied in order to handle phase… read more here.
Keywords: phase; focus; irradiation; phase compensation ... See more keywords
Radar wideband digital beamforming based on time delay and phase compensation
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Electronics"
DOI: 10.1080/00207217.2018.1426121
Abstract: ABSTRACT In conventional phased array radars, analogue time delay devices and phase shifters have been used for wideband beamforming. These methods suffer from insertion losses, gain mismatches and delay variations, and they occupy a large… read more here.
Keywords: array; phase; time; phase compensation ... See more keywords
Optimization of Iterative Algorithms for Focusing Light Through Scattering Media
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2017.2679026
Abstract: A light beam transmitted through scattering media usually turns into disordered speckles. Fortunately, there are iterative algorithms to focus light transmitted through scattering media using a spatial phase modulator (SPM). In this work, we optimized… read more here.
Keywords: spm; iterative algorithms; phase compensation; scattering media ... See more keywords
Phase Compensation and Time-Reversal Transform for High-Order Maneuvering Target Detection
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2022.3192392
Abstract: In this letter, we consider a target with high-order motion and propose two long-time coherent integration algorithms with low computational cost for target detection via phase compensation and time-reversal transform. Due to the even/odd characteristic,… read more here.
Keywords: reversal transform; time; phase compensation; time reversal ... See more keywords
Broadband Doherty Power Amplifier Based on Coupled Phase Compensation Network
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Microwave Theory and Techniques"
DOI: 10.1109/tmtt.2021.3057628
Abstract: In this article, a new technique is presented to dramatically enhance the bandwidth of a postmatching Doherty power amplifier (PM-DPA). This technique is based on a coupled-line phase compensation network (PCN). Theoretical analysis shows this… read more here.
Keywords: compensation network; based coupled; power amplifier; power ... See more keywords
Transformation from asymmetric spin splitting to symmetric spin splitting with phase compensation in photonic spin Hall effect.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.456406
Abstract: Generally, when an arbitrary polarized light beam is reflected or refracted from an isotropic interface, the spin splitting in photonic spin Hall effect (SHE) shows asymmetry properties. In this paper, we theoretically propose a phase… read more here.
Keywords: asymmetric spin; photonic spin; phase compensation; spin ... See more keywords
Modified metasurface Alvarez lens based on the phase compensation in a microwave band.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.465263
Abstract: Alvarez lenses, a kind of passive zoom lenses with reconfigurable focus, have been widely applied in optics but very few at lower frequencies such as in a microwave band, where the phase approximation for Alvarez… read more here.
Keywords: alvarez; phase compensation; microwave band; alvarez lens ... See more keywords
Deep-turbulence phase compensation using tiled arrays.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.468774
Abstract: Tiled arrays use modulo-2π phase compensation and coherent beam combination to correct for the effects of deep turbulence. As such, this paper uses wave-optics simulations to compare the closed-loop performance of tiled arrays to a… read more here.
Keywords: deep turbulence; phase compensation; tiled arrays; optics ... See more keywords
Highly stable multiple-access underwater frequency transfer with terminal phase compensation.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.435967
Abstract: A multiple-access underwater frequency transfer scheme using terminal phase compensation is demonstrated. With this scheme, a highly stable 100 MHz frequency signal was disseminated over a 3 m underwater link for 5000 s. The timing… read more here.
Keywords: access underwater; multiple access; frequency; frequency transfer ... See more keywords
Broadband tunable metasurface platform enabled by dynamic phase compensation.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.449863
Abstract: Broadband metasurfaces have attracted significant attention for a variety of applications in imaging and communication systems. Here, a method to alleviate the chromatic aberrations issue is proposed in the microwave region using dynamic phase compensation… read more here.
Keywords: broadband; metasurface platform; phase compensation; metasurface ... See more keywords