Results 71 to 80 of about 1,856 (216)

Thermally tunable quantum cascade laser with an external germanium-on-SOI distributed bragg reflector

open access: yes, 2022
Art. 1200407, 7 S.Quantum cascade lasers (QCLs) are essential components for mid-infrared optical spectroscopy. Currently, widely tunable QCLs are using an external diffraction grating to tune the laser wavelength.
Radosavljevic, Sanja   +6 more
core   +2 more sources

Flexible Dual Fabry–Perot Filters Enabling Color Balanced Narrowband Emission Designed by Physics Guided Neural Inverse Optimization

open access: yesNanophotonics, Volume 15, Issue 10, 27 May 2026.
The dual Fabry–Perot interferometer (DFPI) with functionally separated cavities enables simultaneous RGB peak alignment and spectral rebalancing without subpixel patterning. Multi resonance generation and fine spectral tuning are independently controlled, enhancing the color purity.
Keun Soo Shin, Ki Won Jeong, Yun Seon Do
wiley   +1 more source

Recent Developments in Deep‐Ultraviolet Flat Optics

open access: yesNanophotonics, Volume 15, Issue 10, 27 May 2026.
Deep‐ultraviolet flat optics (DUVFO) is emerging as a key platform for next‐generation photonics, enabling advanced functionalities beyond conventional DUV optics. This review outlines materials, devices, and system advances, highlighting wide‐bandgap platforms, while identifying key challenges in dispersion control, characterization, and wafer‐scale ...
Omar A. M. Abdelraouf   +2 more
wiley   +1 more source

The Versatile Applications of Distributed Bragg Reflector (DBR) Lasers: Sensing, Communication, And Beyond

open access: yesHighlights in Science, Engineering and Technology
Distributed Bragg Reflector (DBR) lasers have emerged as versatile and indispensable tools across various domains. Their advantages, including high signal-to-noise ratios, narrow linewidths, and support for distributed sensing, enable them to excel in diverse applications. DBR lasers have revolutionized optical fiber communication, medical diagnostics,
openaire   +1 more source

Tamm Plasmon Resonance Responsiveness to SARS‐CoV‐2 Virus‐Like Particles

open access: yesNanophotonics, Volume 15, Issue 10, 27 May 2026.
This work presents a Tamm plasmon device combining a SiO2/TiO2 Bragg reflector and nanostructured silver to detect SARS‐CoV‐2 virus‐like particles through resonance attenuation captured by a displacement angle. Optical characterizations, controls experiments, and mechanistic insights highlight structure‐dependent interactions, and suggest applications ...
Andrea Rossini   +5 more
wiley   +1 more source

Monolithic distributed Bragg reflector cavities in Al2O3 with quality factors exceeding one million [PDF]

open access: yes, 2011
Monolithic distributed Bragg reflector (DBR) cavities with quality factors exceeding one million have been realized in aluminum oxide channel waveguides.
Bernhardi, Edward   +4 more
core  

Light-Output Enhancement of GaN-Based Light-Emitting Diodes with Three-Dimensional Backside Reflectors Patterned by Microscale Cone Array

open access: yesThe Scientific World Journal, 2014
Three-dimensional (3D) backside reflector, compared with flat reflectors, can improve the probability of finding the escape cone for reflecting lights and thus enhance the light-extraction efficiency (LEE) for GaN-based light-emitting diode (LED) chips ...
Huamao Huang, Jinyong Hu, Hong Wang
doaj   +1 more source

Lithium Niobate Quadratic Integrated Nonlinear Photonics: Enabling Ultra‐Wide Bandwidth and Ultrafast Photonic Engines

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
This perspective surveys emerging quantum and classical photonic applications across operating wavelengths and timescales, highlighting persistent technological gaps in integrated light sources. We examine the unique advantages of quadratic nonlinear photonics on the thin‐film lithium niobate (TFLN) platform and discuss strategies for realizing ...
Meng Tian   +7 more
wiley   +1 more source

Self-aligned Coupled Waveguide Distributed Bragg Reflector Lasers

open access: yes, 2002
A novel self-aligned coupled waveguide (SACW) multi-quantum-well (MQW) distributed Bragg reflector (DBR) laser is proposed and demonstrated for the first time.
Zhu Hongliang   +6 more
core  

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

open access: yesAdvanced Functional Materials, Volume 36, Issue 38, 11 May 2026.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta   +8 more
wiley   +1 more source

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