Results 131 to 140 of about 461,573 (294)

Demonstration of Monolithic Integration of InAs Quantum Dot Microdisk Light Emitters and Photodetectors Directly Grown on On-Axis Silicon (001)

Micromachines
Silicon-based microcavity quantum dot lasers are attractive candidates for on-chip light sources in photonic integrated circuits due to their small size, low power consumption, and compatibility with silicon photonic platforms.
Shuaicheng Liu, Hao Liu, Jihong Ye, Hao Zhai, Weihong Xiong, Yisu Yang, Jun Wang, Qi Wang, Yongqing Huang, Xiaomin Ren   +9 more
doaj   +1 more source

Matched Filtering for MIMO Coherent Optical Communications with Mode-Dependent Loss Channels. [PDF]

Sensors (Basel), 2022
Torres LM, Cañete FJ, Díez L.
europepmc   +1 more source

Pixelated Laser with Tailored Emission Spectrum Photopatterned by Digital Holographic Microscopy

Advanced Optical Materials, EarlyView.
Azobenzene‐based surface‐relief gratings inscribed via DHM‐integrated holographic lithography enable programmable pixelated DFB laser architectures. This approach allows independent control of grating parameters across a 2D array, enabling spatially tailored emission spectra.
Sudharsana Bhashyam Pillailokam, Alex Berdin, Arri Priimagi   +2 more
wiley   +1 more source

Atmospheric propagation effects relevant to optical communications [PDF]

A number of atmospheric phenomena affect the propagation of light. The effects of clear air turbulence are reviewed as well as atmospheric turbidity on optical communications.
Shaik, K. S.
core   +1 more source

Super-broadband on-chip continuous spectral translation unlocking coherent optical communications beyond conventional telecom bands. [PDF]

Nat Commun, 2022
Kong D, Liu Y, Ren Z, Jung Y, Kim C, Chen Y, Wheeler NV, Petrovich MN, Pu M, Yvind K, Galili M, Oxenløwe LK, Richardson DJ, Hu H.   +13 more
europepmc   +1 more source

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

Advanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin, Michele Amato, Maurizia Palummo   +2 more
wiley   +1 more source

Semiconductor devices for optical communications in 1 micron band of wavelength [PDF]

Crystal growth and the characteristics of semiconductor lasers and diodes for the long wavelength band used in optical communications are examined.
Iga, K., Suematsu, Y.
core   +1 more source

Divergence-degenerate spatial multiplexing towards future ultrahigh capacity, low error-rate optical communications. [PDF]

Light Sci Appl, 2022
Wan Z, Shen Y, Wang Z, Shi Z, Liu Q, Fu X.   +5 more
europepmc   +1 more source

Intramolecular FRET Cascades Enable Small Efficiency Roll‐Off in Solution‐Processed OLEDs

Advanced Optical Materials, EarlyView.
This work highlights how an intramolecular FRET design strategy in solution‐processable MR‐TADF emitters enables narrowband emission, high PLQY, and efficient exciton harvesting. The resulting hyperfluorescent solution‐processed OLEDs reach up to 20.7% EQEmax with minimal efficiency roll‐off even at 10 000 cd m−2, demonstrating strong potential for ...
Mahni Fatahi, Debasish Barman, Youichi Tsuchiya, Chihaya Adachi, Eli Zysman‐Colman   +4 more
wiley   +1 more source

Free-moving-state microscopic imaging of cerebral oxygenation and hemodynamics with a photoacoustic fiberscope

Light: Science & Applications
We report the development of a head-mounted photoacoustic fiberscope for cerebral imaging in a freely behaving mouse. The 4.5-gram imaging probe has a 9-µm lateral resolution and 0.2-Hz frame rate over a 1.2-mm wide area.
Xiaoxuan Zhong, Yizhi Liang, Xiaoyu Wang, Haoying Lan, Xue Bai, Long Jin, Bai-Ou Guan   +6 more
doaj   +1 more source