Results 81 to 90 of about 41,136 (294)
Advanced Optical Materials, EarlyView.Tailored amine substitution in fluorene and dibenzothiophene derivatives enables systematic control of excited‐state properties and triplet population. Combined photophysical studies, TD‐DFT calculations and time‐resolved EPR reveal how charge‐transfer character, sulfur‐induced spin–orbit coupling and triplet manifold engineering cooperate to promote ...
Francesco Ruighi +10 more
wiley +1 more source
The Influence of Laser Linewidth on the Brillouin Shift Frequency Accuracy of BOTDR
Applied Sciences, 2018 This paper analyzes the influence of laser linewidth on the measurement accuracy of a frequency-scanning Brillouin optical time domain reflectometer (FS-BOTDR), allowing for both the width of Brillouin gain spectrum and the signal-to-noise ratio (SNR) of
Qing Bai +8 more
doaj +1 more source
Enhancement of Circular Dichroism in Chiral Dielectric Metasurfaces by Ion Beam Irradiation
Advanced Optical Materials, EarlyView.Ion beam irradiation enables post fabrication tuning of dissipative losses in chiral dielectric metasurfaces composed of C4 symmetric silicon nanostructures. By tailoring the absorption toward critical coupling condition, circular dichroism is enhanced from 0.70 to 0.85, demonstrating a versatile route for maximizing optical chirality and polarization ...
Anna Fitriana +6 more
wiley +1 more source
Nanosecond channel-switching exact optical frequency synthesizer using an optical injection phase-locked loop (OIPLL) [PDF]
, 2004 Experimental results are reported on an optical frequency synthesizer for use in dynamic dense wavelength-division-multiplexing networks, based on a tuneable laser in an optical injection phase-locked loop for rapid wavelength locking.
Duser, M +6 more
core
AIP Advances, 2017 We report the frequency dependence of the ferromagnetic resonance linewidth of the free layer in magnetic tunnel junctions with all perpendicular–to–the–plane magnetized layers.
D. B. Gopman +9 more
doaj +1 more source
Advanced Optical Materials, EarlyView.Nonlinear waveguides are fabricated via an all‐fiber‐based multiphoton polymerization approach incorporating upconversion nanoparticles (UCNPs), which enable both multiphoton absorption at telecommunication wavelengths and nonlinear saturable absorption operation.
Bowon Ryu +7 more
wiley +1 more source
Ferromagnetic resonance linewidth and two-magnon scattering in Fe1-xGdx thin films
AIP Advances, 2017 Magnetization dynamics of Fe1-xGdx thin films (0 ≤ x ≤ 22%) has been investigated by ferromagnetic resonance (FMR). Out-of-plane magnetic field orientation dependence of resonance field and linewidth has been measured.
Sheng Jiang +6 more
doaj +1 more source
Advanced Optical Materials, EarlyView.The importance of photovoltaics (PV) and optoelectronics based on new Earth‐abundant materials is increasing with the ever‐growing energy demand and the need to address it with sustainable material technology. The paper demonstrates good quality magnetron sputter epitaxy of the inexpensive and eco‐friendly semiconductor MgSnN2 for green gap ...
D. Gogova +13 more
wiley +1 more source
Advances in Laser Linewidth Measurement Techniques: A Comprehensive Review
MicromachinesAs a key parameter that defines the spectral characteristics of lasers, the precise measurement of laser linewidth is crucial for a wide range of advanced applications.
Zhongtian Liu +6 more
doaj +1 more source
Piezoelectrically tunable, narrow linewidth photonic integrated extended-DBR lasers [PDF]
Recent advancements in ultra-low-loss silicon nitride (Si3N4)-based photonic integrated circuits have surpassed fiber lasers in coherence and frequency agility.
Siddharth, Anat +14 more
core +1 more source