نتایج جستجو برای: vertical cavity surface emitting laser vcsel
تعداد نتایج: 962263 فیلتر نتایج به سال:
We demonstrate the modeling and experimental results on modulation bandwidth frequency chirp of transverse coupled cavity vertical-cavity surface-emitting lasers (TCC-VCSELs). Both a 3-dB-modulation enhancement reduction are shown in results. These improvements could be explained by an increase differential net gain photon-photon resonance introduced strong coupling cavities. Our TCC VCSEL usef...
The frequency behavior of the tunnel injection quantum dot vertical cavitysurface emitting laser (TIQD-VCSEL) is investigated by using an analyticalnumericalmethod on the modulation transfer function. The function is based on therate equations and is decomposed into components related to different energy levelsinside the quantum dot and injection well. In this way, the effect of the tunnelingpr...
We study the transversemode selection of aweakly index-guided vertical-cavity surface-emitting laser (VCSEL), based on an extension of the model of Valle et al. [Opt. Commun. 115 (1995) 297]. In the model we incorporate carrier capture and escape processes between the separate confinement heterostructure (SCH) layer and the quantum well (QW) active region of a VCSEL. These effects are character...
Abstract Optoelectronic artificial spiking neurons are regarded as promising core elements for novel photonic neuromorphic computing hardware. In this work, we investigate a modular optoelectronic neuron built with an excitable resonant tunneling diode (RTD) coupled to photodetector and vertical-cavity surface-emitting laser (VCSEL). This work provides the first experimental demonstration of am...
CHOQIJETTE, KD., CANEAII, c.. and F I O R ~ Z , L.T.: ‘Low threshold buried heterostructure vertical cavity surfxe-emitting laser’. Conf. Lascrs and Electro-optics, Tcch. Dig. Scr., 1993, Vol. 11, pp. 136138 YOO, n.-s., CHU, KY., PARK, II.-H., LIE. H.G., and LEE, J . : ‘Transversc mode charactetistics of vertical-cavity surface-emitting lasers buried in aniorphous GaAs antiguide layer’, IEEE J ...
Results of a preliminary study to evaluate the feasibility of optical telemetry on an EM launched projectile are discussed. At issue are the relative intensities of the optical noise received in the MCL catch tank from the muzzle flash versus the narrowband optical signal levels generated from tiny emitters onboard a projectile after being launched in the MCL. Two narrowband optical signal emit...
GaInAsSb/GaSb based quantum well vertical cavity surface emitting lasers (VCSELs) operating in mid-infrared spectral range between 2 and 3 micrometres are of great importance for low cost gas monitoring applications. This paper discusses the efficiency and temperature sensitivity of the VCSELs emitting at 2.6 μm and the processes that must be controlled to provide temperature stable operation. ...
−47− Vertical-cavity surface-emitting lasers (VCSELs) are attractive for various applications because of their low cost, ease of designing two-dimensional arrays, and the low divergence angles of the output beam, provided that the issue of their relatively low output power is addressed. The maximum output power of previously reported VCSELs was just over 2 W for CW operation and just over 20 W ...
Low-frequency fluctuations, which are typical irregular oscillations in edge-emitting semiconductor lasers, are experimentally observed for the y-polarization mode (y is the direction along the optical axis of a laser material) in a vertical-cavity surface-emitting laser with optical feedback.
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