Results 31 to 40 of about 23,614 (296)

Effect of cylindrical geometry on the wet thermal oxidation of AlAs [PDF]

open access: yes, 1998
We have investigated the wet thermal oxidation of AlAs in cylindrical geometry, a typical configuration for vertical-cavity surface-emitting lasers.
Alonzo, A. C.   +2 more
core   +1 more source

Reduced Dimensionality Multiphysics Model for Efficient VCSEL Optimization

open access: yesApplied Sciences, 2021
The ICT scene is dominated by short-range intra-datacenter interconnects and networking, requiring high speed and stable operations at high temperatures.
Alberto Gullino   +4 more
doaj   +1 more source

Coupling of polarization and spatial degrees of freedom of highly divergent emission in broad-area square vertical-cavity surface-emitting lasers [PDF]

open access: yes, 2008
The polarization of highly divergent modes of broad-area square vertical-cavity surface-emitting lasers is shown to be only marginally affected by material anisotropies but determined by an interplay of the polarization properties of the Bragg cavity ...
H.-J. Stoeckmann   +5 more
core   +1 more source

Breakthroughs in Semiconductor Lasers

open access: yesIEEE Photonics Journal, 2012
The latest breakthroughs on the frontiers of semiconductor laser capabilities are presented. Achievements including the impressive advances in high-speed lasers with low pJ/bit energy consumption, high-power vertical external cavity surface emitting ...
Mark T. Crowley   +2 more
doaj   +1 more source

Birefringence controlled room-temperature picosecond spin dynamics close to the threshold of vertical-cavity surface-emitting laser devices [PDF]

open access: yes, 2010
We analyze the spin-induced circular polarization dynamics at the threshold of vertical-cavity surface-emitting lasers at room-temperature using a hybrid excitation combining electrically pumping without spin preference and spin-polarized optical ...
Ackemann, T.   +5 more
core   +1 more source

Second-harmonic distortion in vertical-cavity surface-emitting lasers with lateral loss effects [PDF]

open access: yes, 1999
The influence of lateral loss effects on the second-harmonic distortion (SHD) of vertical-cavity surface-emitting lasers is investigated theoretically.
Chui, PC, Yu, SF
core   +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

Bistability conditions between lasing and non-lasing states for vertical-cavity surface-emitting lasers with frequency-selective optical feedback [PDF]

open access: yes, 2007
This paper gives analytical treatment and experimental details on on/off-bistability in vertical-cavity surface-emitting lasers with frequency-selective feedback by a grating.
Ackemann, Thorsten   +3 more
core   +1 more source

High-Speed Buried Tunnel Junction Vertical-Cavity Surface-Emitting Lasers

open access: yesIEEE Photonics Journal, 2010
InP-based, vertical-cavity surface-emitting lasers (VCSELs) utilizing a buried tunnel junction (BTJ) emitting at 1.55 μm with improved active region and reduced parasitics are demonstrated.
Werner Hofmann
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

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