Results 141 to 150 of about 96,571 (279)

Dispersion‐Less Dissipative Soliton Fiber Laser

open access: yesLaser &Photonics Reviews, EarlyView.
A dispersion‐less fiber laser architecture generates high‐energy, pedestal‐free picosecond pulses without resorting to conventional pulse stretching. This energy‐managed laser achieves remarkable flexibility in pulse parameters, delivering up to 0.54 μJ$\mathrm{\mu}\mathrm{J}$ pulses with minimal spectral distortion using standard telecom components ...
Mostafa I. Mohamed   +2 more
wiley   +1 more source

Coordination-Locked Engineering to Achieve Narrowband Room Temperature Phosphorescence in Non-Rare Earth Metal-Organic Frameworks. [PDF]

open access: yesAdv Sci (Weinh)
Zhang W   +11 more
europepmc   +1 more source

Narrowband voice system.

open access: yes, 1979
The problem of how to accommodate more simultaneous users in a given bandwidth communications channel was examined. It was determined that voice signals could be reduced in bandwidth by 50 percent. Two speech formants, Fl and F3 , were filtered from the speech signal and frequency translation performed to form a compact audio signal.
openaire   +1 more source

Optimally designed narrowband guided-mode resonance reflectance filters for mid-infrared spectroscopy

open access: gold, 2011
Jui-Nung Liu   +3 more
openalex   +1 more source

Energy consumption study of channel access modes and modulation schemes of the 2.4 GHz narrowband IEEE 802.15.6

open access: diamond, 2021
Marwa Boumaiz   +4 more
openalex   +2 more sources

Highly Versatile Real‐Time Optical Noise Filtering Through Temporal Cloaking

open access: yesLaser &Photonics Reviews, EarlyView.
Conventional bandpass filtering strategies may be insufficient for recovering optical waveforms under extremely noisy conditions. We demonstrate a temporal‐cloaking denoising strategy enabled by the temporal Talbot effect, which concentrates the coherent signal of interest into short temporal slots while broadband noise remains temporally spread.
Majid Goodarzi   +5 more
wiley   +1 more source

Optical Coherence Tomography for High‐Precision Industrial Inspection in Industry 4.0: Advances, Challenges, and Future Trends

open access: yesLaser &Photonics Reviews, EarlyView.
This review examines how optical coherence tomography transforms industrial inspection by delivering real‐time, micrometer‐resolution, depth‐resolved imaging. It surveys applications across display manufacturing, thin films, microelectronics, laser processing, and coatings, evaluates performance against conventional techniques, and highlights emerging ...
Nipun Shantha Kahatapitiya   +7 more
wiley   +1 more source

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