Results 31 to 40 of about 5,833,148 (164)

Effects of different current confinement layers in GaN-based VCSELs

AIP Advances, 2023
For GaN-based vertical-cavity surface-emitting lasers (VCSELs), a suitable current confinement layer is essential for high-performance devices. The effect of different current confinement layers, including SiO2, AlN, and diamond, on the performance of ...
Yan-Hui Chen, Yang Mei, Zhong-Ming Zheng, Rong-Bin Xu, Ya-Chao Wang, Lei-Ying Ying, Zhi-Wei Zheng, Hao Long, Yi-Kun Bu, Bao-Ping Zhang   +9 more
doaj   +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

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

Polarization dynamics in spin‐VCSELs with integrated surface grating for high birefringence splitting

Electronics Letters, 2023
Polarization dynamics in spin‐polarized vertical‐cavity surface‐emitting lasers (spin‐VCSELs) with high birefringence have recently been demonstrated to offer very high potential for optical data‐transmission systems that outperform their counterparts ...
Markus Lindemann, Natalie Jung, Nicolas Manrique‐Nieto, Tobias Pusch, Rainer Michalzik, Nils C. Gerhardt, Martin R. Hofmann   +6 more
doaj   +1 more source

Low Threshold Vertical Cavity Surface Emitting Lasers Based on CsPbI3 Thin Films

Advanced Science, EarlyView.
The first vertical‐cavity surface‐emitting laser (VCSEL) based on CsPbI3 thin films is fabricated by planar hot pressing. By optimizing the cavity design through optical gain assessment and rigorous coupled‐wave analysis, the VCSEL achieved an exceptionally low lasing threshold of 2.8 µJ cm−2.
Naho Kurahashi, Maximilian Schiffer, Cedric Kreusel, Christian Tückmantel, Ahmed Kadid, Habib Ur Rehman, Florian Gaschler, René Anfang, Christopher Knoth, Maximilian Buchmüller, Patrick Görrn, Thomas Riedl   +11 more
wiley   +1 more source

Self-pulsing dynamics in a cavity soliton laser [PDF]

, 2010
The dynamics of a broad-area vertical-cavity surface-emitting laser (VCSEL) with frequency-selective feedback supporting bistable spatial solitons is analyzed experimentally and theoretically. The transient dynamics of a switch-on of a soliton induced by
Oppo, G. -L., Radwell, N., Firth, W. J., Ackemann, T., McIntyre, C.   +4 more
core   +4 more sources

Multi-junction cascaded vertical-cavity surface-emitting laser with a high power conversion efficiency of 74%

Light: Science & Applications
High electro-optical conversion efficiency is one of the most distinctive features of semiconductor lasers as compared to other types of lasers. Its further increase remains a significant objective.
Yao Xiao, Jun Wang, Heng Liu, Pei Miao, Yudan Gou, Zhicheng Zhang, Guoliang Deng, Shouhuan Zhou   +7 more
doaj   +1 more source

Performance Characteristics of Conventional Vertical Cavity Surface Emitting Lasers VCSELs at 1300 nm

Zanco Journal of Pure and Applied Sciences, 2019
Vertical-cavity surface emitting lasers (VCSELs) are interesting devices because of their low-cost manufacturing and testing methods, circularly shaped output beam for high coupling efficiency and suited for use in fiber-optic networks and as optical ...
Faten Adel Ismael Chaqmaqchee
doaj   +1 more source

The Vertical-Cavity Surface Emitting Laser (VCSEL) and Electrical Access Contribution [PDF]

, 2011
This chapter aims at highlighting the influence of the electrical access of different kinds of Vertical-Cavity Surface-Emitting Laser (VCSEL) (Rissons & Mollier, 2009). By presenting an overview of electrical equivalent circuit modeling and characterization for the VCSEL chip, based on the Scattering parameters, an overview of the VCSEL performance is ...
Angelique Rissons, Jean-Claude Mollier
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