Results 181 to 190 of about 2,658 (232)

Quantum-Cascade Vertical-Cavity Surface-Emitting Laser (QC-VCSEL)

2018 20th International Conference on Transparent Optical Networks (ICTON), 2018
The paper is devoted to physics of an operation of new semiconductor lasers, namely – the quantum-cascade vertical-cavity surface-emitting diode lasers (QC-VCSELs). These lasers are expected to exhibit advantages of both the vertical-cavity surface-emitting diode lasers (VCSELs) and the unipolar quantum-cascade lasers (QCLs).
Wlodzimierz Nakwaski, Maciej Dems, Robert P. Sarzala, Sandra Grzempa, Tomasz Czyszanowski   +4 more
openaire   +1 more source

Nonlinear spectroscopy with a vertical-cavity surface-emitting laser (VCSEL)

Applied Physics B: Lasers and Optics, 2000
We have evaluated the suitability of a vertical-cavity surface-emitting laser diode (VCSEL) for spectroscopic applications. Despite its low output power it is possible to observe narrow resonances in a saturated absorption spectroscopy experiment on the cesium D 2 transition at 852 nm, limited in width by the laser linewidth of several tens of MHz ...
C. Affolderbach, A. Nagel, S. Knappe, C. Jung, D. Wiedenmann, R. Wynands   +5 more
openaire   +1 more source

Design and modeling of a vertical-cavity surface-emitting laser (VCSEL)

2008 IEEE International Conference on Semiconductor Electronics, 2008
In this paper, we attempt to design, simulate and characterize an InGaAs-based vertical-cavity surface-emitting laser (VCSEL) employing InGaAsP multi-quantum wells sandwiched between GaAs/AlGaAs and GaAs/AlAs distributed Bragg reflectors using an industrial-based numerical simulator.
Kumarajah Kandiah, P. Susthitha Menon, Sahbudin Shaari, Burhanuddin Yeop Majlis   +3 more
openaire   +1 more source

Modes Distribution in Quantum-Cascade Vertical-Cavity Surface-Emitting Laser (VCSEL)

2018 20th International Conference on Transparent Optical Networks (ICTON), 2018
Performance of any semiconductor laser depends on an efficiency of mutual interaction between electrical carriers and an optical field. It concerns, in particular, performance of considered here new semiconductor lasers – the quantum-cascade vertical-cavity surface-emitting diode lasers (QC VCSELs). These lasers are anticipated to exhibit advantages of
Sandra Grzempa, Wlodzimierz Nakwaski, Maciej Dems, Tomasz Czyszanowski   +3 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

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

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

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