Results 131 to 140 of about 977 (184)

Polarization modes in long-wavelength vertical-cavity surface-emitting lasers (VCSELs) and VCSEL-arrays

SPIE Proceedings, 2010
Spatial transverse modes and polarization states are experimentally studied in single vertical cavity surface emitting lasers (VCSELs) and phased-locked VCSEL arrays emitting at 1.3 mu m wavelength. Analysis of the polarization-resolved near fields, far fields and emission spectra permit the observation of the competition between the different modes ...
Lamothe, E., Mutter, L., Iakovlev, V., Caliman, A., Mereuta, A., Sirbu, A., Kapon, E.   +6 more
openaire   +1 more source

Transport and modulation analysis of vertical cavity surface emitting lasers (VCSEL)

LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings, 2002
We present a comprehensive one-dimensional analysis of VCSELs based on self-consistent solution of laser, carrier transport and Poisson equations. Based on gain spectrum calculations and thermal analysis of VCSELs, we investigate the modulation response of VCSELs.
R.F. Nabiev, C.J. Chang-Hasnain
openaire   +1 more source

Vertical cavity surface emitting lasers (VCSELs) and VCSEL arrays for communication and sensing

2022
Future generations of optical wireless communication and sensing systems require compact, low-cost, reliable, and highly efficient light sources capable of transmitting modulated beams across free space at gigabit per second (Gbps) data rates and pulsed beams with sub-nanosecond rise and fall times.
openaire   +1 more source

Use of vertical cavity surface emitting lasers(VCSELs) for spectroscopic applications

Semiconductor Lasers Advanced Devices and Applications, 1995
We describe the first report of the use of VCSELs for spectroscopic applications. Using a 760 nm VCSEL tuned to one of the weak A band transitions of oxygen, a minimum detectivity of 1600 ppm was obtained, in these preliminary experiments.
Narasimha P.R. Bhadri, S. Gupta, R.K. Jain, D.A. Brinkmann, W.S. Fu, S.E. Swirhun   +5 more
openaire   +1 more source

MOVPE growth of visible vertical-cavity surface-emitting lasers (VCSELs)

Journal of Crystal Growth, 2003
Abstract This paper summarises the development of the epitaxial growth process for visible vertical-cavity surface-emitting lasers (VCSELs) in metal-organic vapour phase epitaxy (MOVPE). The production of these devices which are of particular interest, e.g.
M. Zorn, A. Knigge, U. Zeimer, A. Klein, H. Kissel, M. Weyers, G. Tränkle   +6 more
openaire   +1 more source

Red vertical cavity surface emitting lasers (VCSELs) for consumer applications

SPIE Proceedings, 2008
There are many potential applications of visible, red (650nm - 690nm) vertical cavity surface emitting lasers (VCSELs) including high speed (Gb) communications using plastic optical fiber (POF), laser mouse sensors, metrology, position sensing.
Geoffrey Duggan, David A. Barrow, Tim Calvert, Markus Maute, Vincent Hung, Brian McGarvey, John D. Lambkin, Torsten Wipiejewski   +7 more
openaire   +1 more source

Time-localized Structures in Vertical-Cavity Surface-Emitting Lasers (VCSELs)

Numerical Simulation of Optoelectronic Devices, 2014, 2014
In this presentation we will review the results recently obtained on Time-Localized Structures (TLS) in VCSELs coupled to an external cavity. We show that, when the cavity roundtrip is much larger than the medium timescales, this system exhibits a temporal aspect-ratio large enough to host TLS. Two configurations will be considered.
M. Marconi, M. Giudici, J. Javaloyes, S. Balle   +3 more
openaire   +1 more source

Temperature Effects on the Power Characteristics of Vertical-Cavity Surface-Emitting Lasers (VCSELs)

2022
A numerical analysis on temperature variation effects on the output power (Pout) characteristics of vertical-cavity surface-emitting lasers (VCSELs) is presented in this paper. While previous works in the literature mostly omitting the thermal effects.
Hisham Hisham, Adzir Mahdi, Ahmad Fauzi
openaire   +1 more source

Vertical-Cavity Surface-Emitting Lasers (VCSELs): Optics, Risk, Collaborations

Conference on Lasers and Electro-Optics 2012, 2012
The 1989 VCSEL-advance by this group, which marked a turning point in VCSEL development efforts, was a curious culmination built upon outside publications, optical innovations from the group, risky-research funding, and resolute inter-company collaboration. Article not available.
Jack Jewell, Axel Scherer, Sam McCall, Yong Lee, Jim Harbison, Leigh Florez, Hyatt M. Gibbs   +6 more
openaire   +1 more source

Modeling of tunnel junctions for current injection in vertical cavity surface emitting lasers (VCSELs)

SPIE Proceedings, 2009
Tunnel junctions have been widely used in the fabrication of Vertical Cavity Surface Emitting Lasers since it allows fabrication of low electrical resistance as well as low optical absorption Bragg mirrors. The basic idea is to inject holes through a highly doped reverse biased n+/p+ tunnel junction.
Iordachescu, Adrian, Jacquet, Joel
openaire   +2 more sources