Results 51 to 60 of about 5,425 (221)
Designing multilayer dielectric filter based on TiO2/SiO2 for fluorescence microscopy applications [PDF]
Компьютерная оптика, 2020 This study presents a new construction design of a distributed Bragg reflector (DBR) filter and a Fabry–Pérot (FP) filter by using needle technique as a synthesis method.
Hanh Hong Mai
doaj +1 more source
High-reflectivity broadband distributed Bragg reflector lattice matched to ZnTe
, 2009 We report on the realization of a high quality distributed Bragg reflector with both high and low refractive index layers lattice matched to ZnTe. Our structure is grown by molecular beam epitaxy and is based on binary compounds only. The high refractive
Figge, S. +3 more
core +1 more source
Polarization properties in the transition from below to above lasing threshold in broad-area vertical-cavity surface-emitting lasers [PDF]
, 2009 For highly divergent emission of broad-area vertical-cavity surface-emitting lasers (VCSELs) a rotation of the polarization direction by up to 90 degrees occurs when the pump rate approaches the lasing threshold.
C. W. Gardiner +9 more
core +3 more sources
Self‐Hybridized Exciton‐Polariton Photodetectors From Layered Metal‐Organic Chalcogenolates
Advanced Functional Materials, EarlyView.Self‐hybridized exciton‐polariton photodetectors are demonstrated using high refractive index mithrene, eliminating the need for top mirrors. This simplified architecture enables tunable sub‐bandgap photodetection via lower exciton‐polariton states and enhanced carrier transport through ultrafast polariton group velocities.
Bongjun Choi +3 more
wiley +1 more source
Tamm Plasmon Polaritons Hydrogen Sensors
Advanced Physics Research, 2023 Tamm plasmon polariton (TPP) resonance can be excited within the stopband of a distributed Bragg reflector (DBR) by combining a thin metal film. When exposured to hydrogen gas, the TPP resonance feature is redshifted for the TPPs structure with palladium
Yu‐Sheng Chen +8 more
doaj +1 more source
Dynamic properties of silicon-integrated short-wavelength hybrid-cavity VCSEL [PDF]
, 2016 We present a vertical-cavity surface-emitting laser (VCSEL) where a GaAs-based "half-VCSEL" is attached to a dielectric distributed Bragg reflector on silicon using ultra-thin divinylsiloxane-bis-benzocyclobutene (DVS-BCB) adhesive bonding, creating a ...
Baets, Roel +6 more
core +1 more source
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
High-Q distributed-Bragg-grating laser cavities [PDF]
, 2011 Applying Bragg gratings in Al2O3 channel waveguides, we demonstrate distributed Bragg reflectors with Q-factors of 1.02x10e6. An integrated Al2O3:Yb3+ waveguide laser with 67% slope efficiency and 47 mW output power is achieved with such ...
Bernhardi, E.H. +4 more
core +2 more sources
Directional Flow of Confined Polaritons in CrSBr
Advanced Materials, EarlyView.CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak +10 more
wiley +1 more source
IEEE Photonics Journal, 2020 The enhanced light output efficiency of passive-matrix micro light-emitting-diode (LED) display was achieved by employing the tapered sidewalls and distributed-Bragg-reflector (DBR) passivation structure. The oblique angles at the bottom of multi-quantum
Po-Wei Chen +6 more
doaj +1 more source