Results 191 to 200 of about 2,658 (232)
Some of the next articles are maybe not open access.
MOVPE growth of visible vertical-cavity surface-emitting lasers (VCSELs)
Journal of Crystal Growth, 2003Abstract 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 +6 more
openaire +1 more source
Vertical-Cavity Surface-Emitting Lasers (VCSELs): Optics, Risk, Collaborations
Conference on Lasers and Electro-Optics 2012, 2012The 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 +6 more
openaire +1 more source
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
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
Conference on Lasers and Electro-Optics Europe, 1996
The polarisation of the fundamental transverse mode of VCSEL can change when the injected current is altered. Switching of the polarisation associated to the excitation of higher order modes has been observed. It has also been noted that the strain induced during the fabrication causes birefringence in VCSEL.
A. Valle, L. Pesquera, K.A. Shore
openaire +1 more source
The polarisation of the fundamental transverse mode of VCSEL can change when the injected current is altered. Switching of the polarisation associated to the excitation of higher order modes has been observed. It has also been noted that the strain induced during the fabrication causes birefringence in VCSEL.
A. Valle, L. Pesquera, K.A. Shore
openaire +1 more source
Pseudo-high-order-mode in vertical-cavity surface-emitting lasers (VCSELs)
SPIE Proceedings, 2002We built a test system to pick up the pattern of light beam from the VCSELs and the EL spectrum simultaneously in order to study the mode behavior when the current applied on the device increased. As a result, we observed that the light spots from the VCSEL seemd to be high-order-mode while its EL spectrum included more than one peak wavelength ...
Haisong Wang +4 more
openaire +1 more source
(Invited) Development of Blue Vertical Cavity Surface Emitting Lasers (VCSELs) with Nanoporous GaN
ECS Meeting Abstracts, 2021Blue and green vertical cavity surface emitting lasers (VCSELs) are expected to be used in future generation display and lighting applications. Applications in virtual reality (VR), augmented reality (AR), retinal scanning display (RSD), and portable projection devices are only a few of the anticipated applications.
Jung Han, Rami Elafandy, Jin-ho Kang
openaire +1 more source
SPIE Proceedings, 1999
GHz. It was called "TEN.".We found the electrical noise may be correlated to the optical noise around the threshold region butalso when the mode competition effect exists. As a result, the electrical noise depends on the carrier noise andshows the same qualitative feature as the optical intensity noise.
Guillaume Belleville +4 more
openaire +3 more sources
GHz. It was called "TEN.".We found the electrical noise may be correlated to the optical noise around the threshold region butalso when the mode competition effect exists. As a result, the electrical noise depends on the carrier noise andshows the same qualitative feature as the optical intensity noise.
Guillaume Belleville +4 more
openaire +3 more sources
Polarization Bistable Vertical Cavity Surface Emitting Laser (VCSEL): Control and Memory
European Conference and Exhibition on Optical Communication, 2012We report on bistability in VCSEL involving two linear and orthogonal polarizations. The domain of coexistence is extended to the full current range of the device. We demonstrate control of the polarization state by perturbing optically the VCSEL. We show that the induced polarization state is recovered after having turned off and on the device.
M. Marconi, S. Barland, M. Giudici
openaire +1 more source
Vertical-cavity surface-emitting laser (VCSEL) sources for frequency domain photon migration
SPIE Proceedings, 2015Frequency domain photon migration (FDPM) uses modulated laser light to measure the bulk optical properties of turbid media and is increasingly being applied for noninvasive functional medical imaging. Though semiconductor edge emitting laser diodes (EELs) have been traditionally used for this application, we show that VCSELs exhibit performance ...
Thomas D. O'Sullivan +5 more
openaire +1 more source
Optical pumping using chirped pulses of a vertical-cavity surface-emitting laser (VCSEL)
2007 Quantum Electronics and Laser Science Conference, 2007We study the response of a VCSEL after optical pumping using pulses with varying quadratic chirp. The data are in good agreement with a microscopic rate approximation model.
S. Chatterjee +8 more
openaire +1 more source