Results 121 to 130 of about 662 (179)

Miniaturisation of Raman spectroscopy systems: from benchtop to backpocket.

Lab Chip
Hardy M, Kanade PP, Buchan E, Goldberg Oppenheimer P, McPolin CPT, Bowman RM.   +5 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

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
exaly   +2 more sources

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

Proceedings of SPIE, 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.

exaly   +3 more sources

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.
Hyatt M Gibbs
exaly   +2 more sources

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

Vertical-Cavity Surface-Emitting Laser (VCSEL)

Proceedings of the IEEE, 2013
The vertical-cavity surface-emitting laser (VCSEL) is becoming a key device in high-speed optical local area networks (LANs) and even wide-area networks (WANs). This device is also enabling ultraparallel data transfer in equipment and computer systems, including storage area networks (SANs) and wide optoelectronics fields. In this paper, we will review
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

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

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