Results 11 to 20 of about 662 (179)

High-Speed 1030 nm Anti-Waveguide VCSELs With 25 GHz Modulation Bandwidth

open access: yesIEEE Photonics Journal, 2023
We present the design, fabrication, and performance of high-speed oxide-confined 1030 nm vertical-cavity surface-emitting lasers (VCSELs) with a short anti–waveguiding optical cavity.
Yanjing Wang   +6 more
doaj   +1 more source

Chaotic-cavity surface-emitting lasers for optical wireless communication and low-speckle illumination

open access: yesAPL Photonics, 2023
Though necessary and advantageous in many fields, the high coherence of lasers is detrimental to their performance in certain applications, including illumination, imaging, and projection.
Omar Alkhazragi   +9 more
doaj   +1 more source

A Simple Method to Build High Power PCSEL Array with Isolation Pattern Design

open access: yesCrystals, 2022
Photonic crystal surface-emitting lasers (PCSELs) hold promising properties of both edge emitting lasers (EELs) and vertical-cavity surface-emitting lasers (VCSELs). They possess high output power while radiating light vertically, being thought of as the
Chia-Jui Chang   +6 more
doaj   +1 more source

Long-Wavelength VCSELs: Status and Prospects

open access: yesPhotonics, 2023
Single-mode long-wavelength (LW) vertical-cavity surface-emitting lasers (VCSELs) present an inexpensive alternative to DFB-lasers for data communication in next-generation giga data centers, where optical links with large transmission distances are ...
Andrey Babichev   +7 more
doaj   +1 more source

Low-threshold wavelength-tunable ultraviolet vertical-cavity surface-emitting lasers from 376 to 409 nm

open access: yesFundamental Research, 2021
Optically pumped wavelength-tunable vertical-cavity surface-emitting lasers (VCSELs) operating in the ultraviolet A (UVA) spectrum were demonstrated. The VCSELs feature double dielectric distributed brag reflectors and a wedge-shaped cavity fabricated ...
Yang Mei   +6 more
doaj   +1 more source

Contact Geometrical Study for Top Emitting 980 nm InGaAs/GaAsP Vertical-Cavity Surface Emitting Lasers

open access: yesARO-The Scientific Journal of Koya University, 2021
Geometrical contacts of a double mesa structure with 16 rows ×15 columns arrays of top emitting GaAs based 980 nm vertical cavity surface emitting lasers (VCSELs) are fabricated and characterized.
Faten A. Chaqmaqchee
doaj   +1 more source

Annealing effects of 850 nm vertical-cavity surface-emitting lasers after proton irradiation

open access: yesHeliyon, 2022
A long-term annealing experiment was performed using 850 nm vertical-cavity surface-emitting lasers (VCSELs) irradiated with 10 MeV protons. Static parameters such as the threshold current, slope efficiency, and light output power were tested using ...
Jiawei Chen   +5 more
doaj   +1 more source

Equivalent Circuit Model of High-Performance VCSELs

open access: yesPhotonics, 2020
In this work, a general equivalent circuit model based on the carrier reservoir splitting approach in high-performance multi-mode vertical-cavity surface-emitting lasers (VCSELs) is presented.
Marwan Bou Sanayeh   +2 more
doaj   +1 more source

Proton implantation in just above active region for improvement of power conversion efficiency of VCSELs

open access: yesElectronics Letters, 2021
Improving the power conversion efficiency of vertical cavity surface‐emitting lasers (VCSELs) by three‐dimensionally control of the carrier concentration, which is the main mechanism of the electrical resistance and optical absorption has been ...
Tomoyuki Miyamoto, Hayato Sakamoto
doaj   +1 more source

Recent Advances in 850 nm VCSELs for High-Speed Interconnects

open access: yesPhotonics, 2022
Vertical-cavity surface-emitting lasers (VCSELs) have made remarkable progress, are being used across a wide range of consumer electronic applications, and have particularly received much attention from the telecom and datacom industries.
Hao-Tien Cheng   +3 more
doaj   +1 more source

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