Results 141 to 150 of about 3,742 (297)
, 2013 We report a high-temperature-resistant distributed Bragg reflector fiber laser using thermally regenerated gratings. The laser was characterized and tested to be capable of long-term lasing in high temperature environment up to 750°C.
Li, M +4 more
core
An electro-optically tunable bragg reflector in a liquid crystal waveguide
, 2010 A distributed feedback guided-wave device is proposed and analyzed numerically in liquid crystals with a tuning range exceeding 100 nm. The performance of the structure is evaluated, demonstrating an efficient Bragg reflector with voltage-tunable ...
Giovanni Gilardi +7 more
core +1 more source
Advanced Materials Technologies, EarlyView.A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik +6 more
wiley +1 more source
Waveguide Geometry–Driven Trade‐Offs in Resonant Cavity Sensor Performance
Advanced Optical Materials, EarlyView.Waveguide geometry governs the interplay between sensitivity, intrinsic Q‐factor, and wavelength noise in silicon nitride resonant sensors. Contrary to intuition, higher sensitivity does not ensure superior performance. Low‐noise, high‐Q ridge resonators achieve the lowest detection limits, revealing that detection is ultimately constrained by noise ...
Mohammad Talebi Khoshmehr +6 more
wiley +1 more source
Plasmonic Bragg reflector and its application on optical switching
, 2009 In nowadays intergrated circuit design, the diffraction limit has restricted the downscaling of the conventional electronic components. Surface Plasmon Polaritons (SPPs) are quantized charge density oscillations that occur at the interface between metal ...
Liu, Yu
core +1 more source
Neodymium‐Doped Nanocrystals for Sensing Cellular Temperature at the Nanoscale
Advanced Optical Materials, EarlyView.Neodymium‐doped NaYF4 nanocrystals are engineered as bright, biocompatible nanothermometers for intracellular temperature mapping. Their ratiometric near‐infrared emission enables highly sensitive, nanoscale thermal readouts in living cells. Combined with gold nanostars for photothermal therapy, they reveal pronounced subcellular heating heterogeneity ...
Maria Bravo +13 more
wiley +1 more source
High-Q monolithic distributed Bragg reflector cavities in Al2O3 channel waveguides
, 2011 Monolithic distributed Bragg reflector cavities have been realized in aluminum oxide channel waveguides and exhibit grating reflectivities exceeding 99%, finesse of up to 147 and quality factors of more than one ...
Bernhardi, Edward +4 more
core
Waveguide Distributed Bragg Reflector
Waveguide Distributed Bragg Reflectoridentifier:oai:t2r2.star.titech.ac.jp ...
openaire
When Cubic is Not Isotropic: Phonon–Exciton Decoupling in CuInSnS4 Single Crystals
Advanced Optical Materials, EarlyView.A cubic CuInSnS4 crystal does not fully play by cubic rules. While phonons follow the average iso‐tropic lattice symmetry, the disorder‐localized excitons break away, showing strong, and reproduci‐ble polarization‐dependent emission. This work shows how intrinsic cation disorder can turn a mac‐roscopically cubic material into a source of hidden ...
Lara Kim Linke +11 more
wiley +1 more source
A Gallium Nitride Distributed Bragg Reflector Cavity for Integrated Photonics Applications
, 2012 A deep etched 1D Distributed Bragg Reflector cavity in GaN-AlN-Sapphire has been analytically modeled and simulated using 2D FDTD.
Engin, E +6 more
core