A single collimating lens based dual-beam exposure system for fabricating long-period grating
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.125139
Abstract: Abstract A single collimating lens based dual-beam exposure system is proposed in this paper in which two interference beams share one collimating lens. Based on theoretical analysis and simulation, the interference aberration caused by the… read more here.
Keywords: system; collimating lens; exposure; lens based ... See more keywords
Scattering-lens based quantum imaging beyond shot noise
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-85846-7
Abstract: The scheme of optical imaging using scattering lens can provide a resolution beyond the classical optical diffraction limit with a coherent-state input. Nevertheless, due to the shot noise of the coherent state, the corresponding signal-to-noise… read more here.
Keywords: scattering lens; shot noise; coherent state; noise ... See more keywords
Time-variant beam selection for lens-based millimetre-wave massive MIMO systems
Sign Up to like & getrecommendations! Published in 2017 at "Electronics Letters"
DOI: 10.1049/el.2017.2259
Abstract: Lens-based millimetre-wave (mmWave) massive multiple-input multiple-output (MIMO) can utilise beam selection to reduce the number of radio-frequency (RF) chains. However, most of the existing beam selection schemes involve high complexity, especially with the fast time-variant… read more here.
Keywords: beam selection; time; selection; based millimetre ... See more keywords
Two-sided residual refocusing for an acoustic lens-based photoacoustic imaging system.
Sign Up to like & getrecommendations! Published in 2018 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/aac8c5
Abstract: In photoacoustic (PA) cameras, an acoustic lens-based system can form a focused image of an object plane. A real-time C-scan PA image can be formed by simply time gating the transducer response. While most of… read more here.
Keywords: system; time; acoustic lens; residual refocusing ... See more keywords
Simulating and optimizing compound refractive lens-based X-ray microscopes
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Synchrotron Radiation"
DOI: 10.1107/s160057751602049x
Abstract: A comprehensive ray-transfer matrix formalism for the use and design of compound refractive lens-based X-ray microscopes is presented, including closed analytical expressions for key optical parameters. These form the basis of an optimization, which reveals… read more here.
Keywords: compound refractive; based ray; refractive lens; lens based ... See more keywords
Detecting spatial chirp signals by Luneburg lens based transformation medium.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.453937
Abstract: Gradient refractive index (GRIN) lens-based chirp signal chirpiness detection usually relies on the fractional Fourier transform (FRFT) functionality of a quadratic GRIN lens and is limited by paraxial conditions. In this paper, a non-FRFT mechanism-based… read more here.
Keywords: optics; lens based; chirp; grin lens ... See more keywords
Planar Alvarez tunable lens based on polymetric liquid crystal Pancharatnam-Berry optical elements.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.468647
Abstract: Virtual reality (VR) and augmented reality (AR) have widespread applications. The vergence-accommodation conflict (VAC), which causes 3D visual fatigue, has become an urgent challenge for VR and AR displays. Alvarez lenses, with precise and continuously… read more here.
Keywords: polymetric liquid; liquid crystal; pancharatnam berry; lens based ... See more keywords
Design and fabrication of a focus-tunable liquid cylindrical lens based on electrowetting.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.478130
Abstract: In this study, a focus-tunable liquid cylindrical lens based on electrowetting was designed and fabricated. The cylindrical cavity usually used in common electrowetting zoom spherical lenses was replaced by a 20 mm × 10 mm × 8 mm cuboid… read more here.
Keywords: tunable liquid; liquid cylindrical; cylindrical lens; based electrowetting ... See more keywords
Reconfigurable scan lens based on an actively controlled optical phased array.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.461697
Abstract: Integrated photonics provides a path for miniaturization of an optical system to a compact chip scale and offers reconfigurability by the integration of active components. Here we report a chip-scale reconfigurable scan lens based on… read more here.
Keywords: scan lens; phased array; actively controlled; reconfigurable scan ... See more keywords