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Showing 1 to 20 of 29 for “"Vertical Cavity Surface Emitting Laser (VCSEL)"”.

  1. Vertical-cavity surface-emitting laser (VCSEL) for 50Gb/s NRZ optical link in data center

    Fu, WenningUniversity of Illinois at Urbana-Champaign2019

    Oxide-confined Vertical-cavity Surface-Emitting Lasers (VCSELs) at 850 nm have been widely deployed in optical data transmission as the optical transmitters. However, the data transmission capability of commercial VCSELs used in 100 m optical links with direct non-return-to-zero (NRZ) modulation …

    uiuc Repository record

  2. Semiconductor Laser Device-Level Characteristics

    Law, Clement K2011

    <p>High-speed modulations of the semiconductor lasers are highly desirable in cost-effective optical communication systems. Developing the experimental setups to extract the characteristics of the semiconductor lasers is vital to the future of the optical research projects. In this thesis, …

    calpoly Repository record

  3. Coherently-coupled vertical-cavity laser arrays

    Johnson, MatthewUniversity of Illinois at Urbana-Champaign2014

    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 …

    uiuc Repository record

  4. Analysis and applications of coupled leaky-mode, implant-defined surface-emitting laser arrays

    Siriani, Dominic F.University of Illinois at Urbana-Champaign2011

    Anti-guided vertical-cavity surface-emitting laser (VCSEL) arrays have been designed, fabricated, and characterized using a number of methods. Two-dimensional coherent arrays are useful for biological and atmospheric sensing, free-space and fiber-based optical links, high-power laser pumps, and …

    uiuc Repository record

  5. One-dimensional simulation of vertical-cavity surface-emitting lasers including energy transport

    Baca, Richard JamesUniversity of Illinois at Urbana-Champaign2011

    A self-consistent one-dimensional vertical-cavity surface-emitting laser (VCSEL) simulator has been developed. The model incorporates drift-diffusion with carrier-capture and thermionic emission in the quantum regions. Microcavity effects on the stimulated and spontaneous emission are carefully …

    uiuc Repository record

  6. Process development and fabrication of photonic crystal based III-V semiconductor optical sources

    Pandey, SanatUniversity of Illinois at Urbana-Champaign2023

    Semiconductor laser diodes play a vital role in modern technology- in such applications as facial recognition and high-speed data transmission for which efficient operation in single mode emission is desired. Vertical Cavity Surface Emitting Laser (VCSEL) diodes are at the forefront for these …

    uiuc Repository record

  7. Evanescently Coupled Vertical Cavity Laser Arrays

    Lehman, Ann C.University of Illinois at Urbana-Champaign2015

    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 …

    uiuc Repository record

  8. Proton-Implanted Photonic Crystal and Holey Vertical -Cavity Surface -Emitting Lasers

    Leisher, Paul OrvilleUniversity of Illinois at Urbana-Champaign2015

    … fabricated in the top mirror of proton-implanted vertical-cavity surface-emitting laser (VCSEL) diodes to achieve single-fundamental-mode operation. A model of the effective transverse index of refraction profile for both cases is presented. The holes are etched a variety of depths for various …

    uiuc Repository record

  9. Coupled -Cavity Surface -Emitting Lasers: Modulation Concepts, Performance and Applications

    Chen, ChenUniversity of Illinois at Urbana-Champaign2015

    … concepts are developed for a composite-resonator vertical-cavity laser (CRVCL) with the objective to extend laser bandwidth beyond that of a conventional vertical-cavity surface-emitting laser (VCSEL), and several new device applications for optical communication and signal processing are also …

    uiuc Repository record

  10. Coherently coupling multiple elements in vertical-cavity surface-emitting laser arrays

    Thompson, Bradley JayUniversity of Illinois at Urbana-Champaign2019

    Vertical-cavity surface-emitting laser (VCSEL) arrays with three or more emitters coherently coupled are the focus of this work. VCSEL arrays have many established applications and reliable coherent VCSEL arrays are a next step in their progression. The key innovation of this work is individual …

    uiuc Repository record

  11. Development of high speed vertical cavity surface-emitting semiconductor diode laser and transistor laser

    Liu, Michael EUniversity of Illinois at Urbana-Champaign2016

    High speed semiconductor lasers are used in optical transceivers for short-reach data links. With fast-growing data capacity and traffic in the data centers around the globe, faster optical transceivers are demanded. A microcavity vertical cavity surface-emitting laser (VCSEL) is able to show a …

    uiuc Repository record

  12. Microwave characterization of vertical cavity surface emitting diode laser and transistor laser

    Wang, Curtis YilinUniversity of Illinois at Urbana-Champaign2019

    Semiconductor lasers are widely deployed in optical transceivers for optical fiber based short-reach (< 100m) data links. With increasingly growing data traffic worldwide in data centers, developments of faster optical transceivers, hence high-speed semiconductor lasers, are highly demanded. The …

    uiuc Repository record

  13. Non-Hermitian aspects of coherently coupled vertical cavity laser arrays

    Gao, ZiheUniversity of Illinois at Urbana-Champaign2018

    … (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 …

    uiuc Repository record

  14. Fabrication and characterization of VCSEL based smart pixels

    Pu, Rui, author, Wilmsen, Carl, advisor, Menoni, Carmen, committee member, Leisure, Robert G., committee member, Grigg, Neil S., committee memberColorado State University. Libraries1999

    Vertical-cavity surface-emitting laser (VCSEL)-based smart pixel arrays are very well suited for parallel optoelectronic processing and board-to-board interconnection. The integration of VCSELs with foundry fabricated integrated circuits is the key technology required to fabricate the smart pixels …

    colostate Repository record

  15. Vertical cavity surface emitting lasers.

    Sale, Terence EdwardUniversity of Sheffield1993

    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 …

    whiterose Repository record

  16. Diodenlaser-gestützter In-situ-Nachweis von O 2 und Alkaliatomen zur Optimierung der Hochtemperaturkohlenstaub- und Sondermüllverbrennung sowie der Brandbekämpfung

    Schlosser, EricUniversität Heidelberg

    … Absorptionsspektroskopie mit abstimmbaren Diodenlasern (TDLAS) diente dem kalibrationsfreien quantitativen Analyse gasförmiger Stoffe, deren Nachweis mit extraktiven Methoden nicht oder nur eingeschränkt möglich ist. Verschiedene Diodenlasertypen (Fabry-Pérot (FPDL), Distributed Feedback (DFB), …

    heid-diss Repository record

  17. Diagnostic and therapeutic devices and applications of endoscopic optical coherence tomography

    Ahsen, Osman OguzMassachusetts Institute of Technology2018

    … diseases. With the maturation of sweptsource lasers, OCT technology has undergone major advancements over the last few years. Swept-source laser sources based on Fourier domain mode locking (FDML), akinetic and vertical cavity surface emitting laser (VCSEL) technologies have shown to reach and …

    mit Repository record

  18. Enhanced digital modulation of coherently coupled vertical cavity laser arrays: theory and application

    Dave, Harshil HUniversity of Illinois at Urbana-Champaign2020

    Dynamic properties of coherently coupled 2x1 vertical-cavity surface-emitting laser (VCSEL) arrays have been studied theoretically and experimentally. Directly modulated VCSELs are the dominant digital light source in short-haul data communication links due to their low cost and low operating …

    uiuc Repository record

  19. Improving the efficiency and threshold current of photonic crystal vertical-cavity surface-emitting lasers

    Tan, Meng PeunUniversity of Illinois at Urbana-Champaign2010

    … low threshold, and high efficiency single mode VCSELs. Various mechanisms that affect the differential quantum efficiency and threshold current of the proton-implanted and oxide-confined photonic crystal vertical-cavity surface-emitting lasers (VCSELs) are studied. Three degrees of freedom in …

    uiuc Repository record

  20. Size and reflectivity dependent optical loss in oxide-confined vertical-cavity surface-emitting lasers

    Lakomy, Katherine AUniversity of Illinois at Urbana-Champaign2017

    Made available in DSpace on 2017-08-10T20:33:30Z (GMT). No. of bitstreams: 2 LAKOMY-THESIS-2017.pdf: 958914 bytes, checksum: 4bfff61cb428f89b6c2d81ea490c1d54 (MD5) LICENSE.txt: 4213 bytes, checksum: c559050e8766c9fd328f1cde81a9d514 (MD5) Previous issue date: 2017-04-28

    uiuc Repository record

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