Results 11 to 20 of about 5,833,148 (164)

Reducing the Threshold of Organic Polariton Lasers by Active Layer Micropatterning and Lateral Confinement

open access: yesSmall Structures
Vertical‐cavity surface‐emitting lasers (VCSELs) are vital for modern photonics, offering compactness, low thresholds, and ease of integration. Pushing them to wavelength‐scale dimensions, however, introduces fabrication and performance challenges ...
Julia Witt   +5 more
doaj   +2 more sources

Vertical cavity surface emitting lasers. [PDF]

open access: yes, 1993
Vertical cavity surface emitting laser (VCSEL) structures have been grown by both metal-organic chemical vapour deposition (MOCVD) and molecular beam epitaxy (MBE).
Sale, Terence Edward
core   +6 more sources

Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices [PDF]

open access: yes, 2010
Spin-polarized lasers offer new encouraging possibilities for future devices. We investigate the polarization dynamics of electrically pumped vertical-cavity surface-emitting lasers after additional spin injection at room temperature.
Hofmann, M. R.   +5 more
core   +4 more sources

Polarization dynamics in vertical-cavity surface emitting lasers [PDF]

open access: yes, 2005
Experiments and their interpretation on polarization dynamics and polarization switching in vertical-cavity surface-emitting lasers operated in the fundamental transverse mode regime are reviewed.
Sondermann, M., Ackemann, Thorsten
core   +3 more sources

Operation of an optical in-well-pumped vertical-external-cavity surface-emitting laser [PDF]

open access: yes, 2006
We report the operation of an optical in-well-pumped vertical-external-cavity surface-emitting laser. The laser delivers 1 W at 855 nm and is pumped with a cost-effective fiber-coupled laser diode emitting at 806 nm.
Ferguson, Allister I.   +5 more
core   +4 more sources

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

Theoretical investigation of the dynamical and static characteristics of vertical-cavity surface-emitting lasers incorporating two-dimensional photonic crystals [PDF]

open access: yes, 2006
In this work we present a spatial and dynamical model of a semiconductor vertical-cavity surface-emitting laser (VCSEL) incorporating a spatial built-in optical waveguide created by the defect in a two-dimensional photonic crystal (PC). The PC is created
Judy Rorison   +5 more
core   +1 more source

Distributed Bragg Reflectors for GaN-Based Vertical-Cavity Surface-Emitting Lasers

open access: yesApplied Sciences, 2019
A distributed Bragg reflector (DBR) is a key building block in the formation of semiconductor microcavities and vertical cavity surface emitting lasers (VCSELs). The success in epitaxial GaAs DBR mirrors paved the way for the ubiquitous deployment of III-
Cheng Zhang, Rami ElAfandy, Jung Han
doaj   +1 more source

Investigation of displacement damage to vertical-cavity surface-emitting red lasers due to 1 MeV electron radiation

open access: yesAIP Advances, 2020
The effects of displacement damage due to 1 MeV electron radiation on 680 nm and 850 nm vertical-cavity surface-emitting lasers (VCSELs) were experimentally investigated.
J. W. Chen   +10 more
doaj   +1 more source

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