Results 141 to 150 of about 659 (179)
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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
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(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
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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
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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
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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
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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
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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
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Analysis of On Chip Optical Source Vertical Cavity Surface Emitting Laser (VCSEL)
2017The major developments in semiconductor laser technology, i.e., Vertical Cavity Surface Emitting Lasers (VCSELs), really revolutionized the field of semiconductor lasers and play a pivotal role in every walk of life such as science and technology, research and development, consumer and industrial environment, medical, military, surveillance ...
Sandeep Dahiya +2 more
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Physica E: Low-dimensional Systems and Nanostructures, 2003
Abstract We present a theoretical and experimental study of oxide-confined top-emitting VCSELs used as resonant detectors. Oxide-mode influence on the detection spectrum is discussed.
C. Bringer +8 more
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Abstract We present a theoretical and experimental study of oxide-confined top-emitting VCSELs used as resonant detectors. Oxide-mode influence on the detection spectrum is discussed.
C. Bringer +8 more
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Vertical Cavity Surface Emitting Laser Market (VCSEL) Market
The VCSEL market is witnessing rapid growth driven by high-speed data transmission, 3D sensing, and LiDAR applications. Its integration across data centers, consumer electronics, and autonomous vehicles positions it as a vital technology in the digital era.openaire +1 more source
Fabrication and applications of lift-off vertical-cavity surface-emitting laser (VCSEL) disks
SPIE Proceedings, 2002Vertical cavity surface emitting lasers (VCSELs) are prepared by standard epitaxial crystal growth techniques on GaAs substrates. The VCSELs include AlGaAs distributed Bragg reflectors (DBRs) and selectively oxidized AlAs or AlGaAs current confinement/optical wave-guiding layers.
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