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Showing 1 to 20 of 95 for “"Vertical-cavity"”.
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Vertical cavity surface emitting lasers.
Vertical cavity surface emitting laser (VCSEL) structures have been grown by both metal-organic chemical vapour deposition (MOCVD) and molecular beam epitaxy (MBE). These incorporate 3 strained InGaAs / GaAs quantum wells placed resonantly in a two wavelength long optical cavity, formed between …
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Evanescently Coupled Vertical Cavity Laser Arrays
Evanescent optical coupling between elements in vertical cavity surface emitting laser (VCSEL) arrays is interesting for applications in areas such as optical communications, image processing, and electronic beam-steering. Past work in coherently coupled VCSEL arrays has resulted in out-of-phase …
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Coherently-coupled vertical-cavity laser arrays
Coherently-coupled vertical cavity surface-emitting laser (VCSEL) arrays offer a unique approach to beam steering and high-radiance applications, and have many advantages such as small size, low cost, high speed, durability and manufacturing ease. Previous work on coherently-coupled VCSEL arrays …
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Dilute Nitride Based Vertical Cavity Enhanced Photodetector
… and demonstrating the performance of a p-i-n / vertical cavity enhanced (VCE) photodetector structure with different material compositions of dilute nitride. The tunable selectivity is taken into account during the development in order for the VCE photodetector to be able to perform as a tunable …
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Development of high-speed vertical-cavity surface-emitting diode laser and vertical-cavity transistor laser for shortreach optical interconnects
Commercialization of vertical-cavity surface-emitting lasers (VCSELs) in the mid-1990s replaced light-emitting diodes and provided more reliable and cost-effective optical interconnects (OIs) with improved data rate from 100 Mb/s to 1 Gb/s. The transition from proton isolated VCSEL to oxide …
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Numerical Simulation of Vertical Cavity Surface Emitting Lasers
In response to the growing importance of vertical cavity surface emitting lasers (VCSELs), the semiconductor laser simulator Minilase has been extended to allow simulation of VCSEL devices. The fundamental physics of VCSELs are no different from the physics of other semiconductor lasers; however, …
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Development of vertical cavity transistor laser and microcavity laser
… technologies. Currently, commercial vertical-cavity surface-emitting diode lasers (VCSELs) have achieved a data transmission rate of 25 Gbit/s per channel. However, the VCSEL bandwidth is limited by the slow recombination lifetime in the active region, which is the major challenge to …
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High-power single-mode vertical-cavity surface-emitting lasers
Since their invention in 1979, vertical-cavity surface-emitting lasers (VCSELs) have been the focus of many research efforts due to the wide applicability of so many of their features. Those that operate in the single-mode regime with sufficiently high power are of particular interest because of …
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Direct modulation of multimode vertical cavity surface emitting lasers
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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A Comprehensive Study of Hybrid Vertical -Cavity Surface -Emitting Lasers
The high frequency modulation response for hybrid VCSELs is measured and compared to the theoretical response of the VCSEL derived through small signal analysis, with good agreement. For the two single mode structure wafers measured, the VCSELs with the implant aperture located farther away from …
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Simulating the Modulation Response of Vertical -Cavity Surface -Emitting Lasers
… extended to simulate the dynamic response of vertical-cavity surface-emitting lasers (VCSELs). Various nonlinear gain effects due to carrier transport have been self-consistently accounted for by MINILASE and their important roles in the modulation response are studied and clarified. First, it …
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Static and Dynamic Properties of Vertical -Cavity Surface -Emitting Lasers
Fiber-induced optical feedback is studied by measuring the static properties of an oxide VCSEL as a function of fiber position and correlating the data to theoretical results using a vector mode-matching method which includes the fiber in the modelled structure. A novel method for estimating the …
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Thermal and Optical Simulations of Vertical Cavity Surface Emitting Lasers
… coupled electronic-thermal-optical simulator for vertical cavity surface emitting lasers (VCSELs). The lattice temperature model is derived based on carrier transport and the conservation of energy. A novel treatment is applied to model distributed Peltier heat at a heterojunction by use of a …
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Heterogeneously bonded vertical cavity surface emitting lasers and thermal modeling
… bonding technique for integrating semiconductor vertical cavity surface emitting lasers (VCSELs) onto hybrid substrates is demonstrated. This approach provides flexibility regarding the choice of device fabrication and hybrid substrate materials. Light output versus injected current and applied …
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Simulating the modulation response of Vertical-Cavity Surface-Emitting lasers
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-23T19:47:36Z No. of bitstreams: 1 liu_yang.pdf: 1056599 bytes, checksum: 919cc5c334cfe8b016ad6c23a3dc7ad7 (MD5)
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Non-Hermitian aspects of coherently coupled vertical cavity laser arrays
… (2 × 1) optically coupled electrically isolated vertical cavity surface emitting laser (VCSEL) arrays have been studied both theoretically and experimentally. Because of the tunable gain/loss profile in the array, the coupled laser system is non-Hermitian in analogy with non-Hermitian quantum …
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Vertical-cavity surface-emitting lasers: computer-aided modal and polarization engineering
L'abstract è presente nell'allegato / the abstract is in the attachment
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Nonlinear Dynamics of solitary and optically-injected spin vertical-cavity lasers
… dynamics and polarisation properties of Spin-Vertical-(External)-Cavity Surface-Emitting Lasers (V(E)CSELs). The focus is on gaining a broad understanding of the various polarised resolved nonlinear dynamical effects in solitary and injected 1300 nm spin-V(E)CSELs. We report a comprehensive …
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Coherent laser arrays from bottom-surface vertical-cavity surface-emitting lasers
Vertical-cavity surface-emitting lasers (VCSELs) are among the best choices for high beam quality semiconductor lasers. By designing a VCSEL array for uniform current injection and having the output coupler on the substrate side of the laser cavity, the laser will more easily operate in the …
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