Results 21 to 30 of about 977 (184)

Low Thermal Crosstalk 808-nm VCSEL Arrays With Nonlinear Mesa Configuration

IEEE Photonics Journal, 2018
In this paper, we demonstrated vertical-cavity surface-emitting laser (VCSEL) arrays with improved thermal stability by arranging the mesa distribution within the array in a nonlinear configuration.
Chuyu Zhong, Xing Zhang, Werner Hofmann, Yongqiang Ning, Lijun Wang   +4 more
doaj   +1 more source

Optical tuning of vertical-cavity surface-emitting laser side-pumped neodymium-doped yttrium aluminum garnet laser cavity

High Power Laser Science and Engineering
High-power 808 nm vertical-cavity surface-emitting laser (VCSEL) chips have unique characteristics for neodymium-doped yttrium aluminum garnet (Nd:YAG) laser pumping compared with conventional edge-emitting laser bars, including a chip surface with high ...
Yang Li, Chuanchuan Li, Xiaolang Qiu, Chongxian Yuan, Yongli Wang, Xin Wei, Lianghui Chen   +6 more
doaj   +1 more source

Vertical Cavity Surface Emitting Laser Performance Maturing through Machine Learning for High-Yield Optical Wireless Network

Micromachines, 2022
The high-yield optical wireless network (OWN) is a promising framework to strengthen 5G and 6G mobility. In addition, high direction and narrow bandwidth-based laser beams are enormously noteworthy for high data transmission over standard optical fibers.
Ammar Armghan, Khaled Aliqab, Farman Ali, Fayadh Alenezi, Meshari Alsharari   +4 more
doaj   +1 more source

Image Transmission Based on Spiking Dynamics of Electrically Controlled VCSEL-SA Neuron

Photonics, 2021
Based on the spiking dynamics of the electrically controlled vertical-cavity surface-emitting laser with an embedded saturable absorber (VCSEL-SA), we propose an image transmission system using two unidirectionally coupled VCSEL-SAs and numerically ...
Min Ni, Xiaodong Lin, Xi Tang, Ziye Gao, Luyao Xiao, Jun Wang, Fan Ma, Qiulan Zheng, Tao Deng   +8 more
doaj   +1 more source

Sub-megahertz narrow linewidth VCSELs with monolithic extended cavity [PDF]

APL Photonics
We demonstrate a monolithic extended-cavity vertical-cavity surface-emitting laser (VCSEL) achieving a linewidth of 890 kHz, which, to our knowledge, ranks among the narrowest reported for this class of lasers.
Yongli Wang, Chuanchuan Li, Yang Zhang, Jian Li, Xin Wei   +4 more
doaj   +1 more source

On‐Chip Photonic Neural Network Architectures

Advanced Optical Materials, EarlyView.
This review presents a comprehensive overview of on‐chip photonic neural network architectures, covering key photonic building blocks, representative network types, and emerging applications. Recent advances, implementation challenges, and future directions are examined, highlighting the potential of integrated photonics to enable ultrafast, energy ...
Seokjin Hong, Berkay Neseli, Seungyeon Cho, Seungsoo Lee, Yeonjun Kim, Seungyoon Choi, Hyo‐Hoon Park, Hamza Kurt   +7 more
wiley   +1 more source

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

InAlGaP vertical cavity surface emitting lasers (VCSELs): processing and performance [PDF]

Conference Proceedings. 1997 International Conference on Indium Phosphide and Related Materials, 2002
The performance of AlGaInP based visible VCSELs has been advanced with the application of new heterostructure designs and the technique of selective oxidation. Improved performance at elevated temperatures as well as high wallplug efficiency, low threshold devices have been demonstrated for devices operating in the 670-680 nm region.
Crawford, M. H., Choquette, K. D., Hickman, R. J., Geib, K. M.   +3 more
openaire   +1 more source

1 W Single‐Mode Large‐Area Edge‐Emitting Laser via Non‐Hermitian Spatial Mode Filtering

Laser &Photonics Reviews, EarlyView.
We demonstrate a non‐Hermitian spatial mode filtering approach for achieving high‐power single‐mode operation in large‐area edge‐emitting laser diodes. By symmetrically coupling passive filter arrays to the main lasing waveguide, higher‐order transverse modes are effectively suppressed while preserving the fundamental mode.
Ece Karabey, Babak Olyaeefar, Mohammadmahdi Alizadeh, Ramy El‐Ganainy, Abdullah Demir   +4 more
wiley   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source