Results 181 to 190 of about 890,794 (377)
Topology Optimization Enables Freeform Matrix Fourier Optics
Advanced Optical Materials, EarlyView.A topology‐optimized freeform metasurface is designed and fabricated to realize matrix Fourier optics, enabling the diffraction of multiple polarization states into distinct far‐field orders. By combining forward design with gradient‐based inverse optimization, high polarization contrast of up to 98.7% is achieved.
Yu‐Tzu Liu +5 more
wiley +1 more source
Graphical solution of some problems of spherical astronomy. [III.] [PDF]
, 1895 Franz Müller
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Advanced Photonics Research, EarlyView.Black GaAs surface which decreases light reflectivity forms in surprising way when GaAs is kept first in hot hydrogen peroxide solution and then in hot‐water solution. To increase performance of many photonic devices (e.g., solar cell, light emitting diode (LED), photodetector), it is essential to decrease light reflection at device interfaces ...
Zahra Jahanshah Rad +27 more
wiley +1 more source
A review of the recent progress in astronomy [VIII.] [PDF]
, 1879 August Seydler
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State‐of‐the‐Art Solar Blind and X‐Ray Photodetectors Based on Gallium Oxide
Advanced Photonics Research, EarlyView.State‐of‐the‐art Ga2O3‐based solar‐blind UV and X‐ray photodetectors (PDs) are reviewed. Benchmark plots compare responsivity versus specific detectivity for UV PDs (photoconductors, photovoltaic, Schottky, heterojunction, avalanche, and phototransistor types) and sensitivity versus response time for X‐ray detectors based on Ga2O3 bulk crystals, thin ...
Catherine Langpoklakpam +7 more
wiley +1 more source
A review of the recent progress in astronomy [VII.] [PDF]
, 1879 August Seydler
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High‐Resolution On‐Chip Digitally Tunable Spectrometer Based on Double‐Cascaded Ring Resonators
Advanced Photonics Research, EarlyView.An integrated spectrometer is here presented, based on two cascaded ring resonators covered with a phase change material. The Vernier architecture is implemented allowing for a digital scan of wavelengths. Resolution smaller than 0.1 nm can be achieved, together with a footprint ≈0.03 mm2 and a bandwidth of the order of tens of nanometers.
Carla Maria Coppola +3 more
wiley +1 more source
A review of the recent progress in astronomy [VI.] [PDF]
, 1878 August Seydler
openalex +1 more source
The Hall Effects of Vortex Light in Optical Materials
Advanced Photonics Research, EarlyView.This article models optical materials as curved spacetime to investigate light propagation, finding that the deflection angle for light with spin σ and intrinsic orbital angular momentum ℓ follows ϑ ∝ 2σ + ℓ$\vartheta \propto 2 \text{&sgr; } + ℓ$.
Wei‐Si Qiu +3 more
wiley +1 more source