Download or read book Electrically Pumped Erbium Pumped Silicon Lasers written by and published by . This book was released on 1995 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare earth doped semiconductors offer the possibility of electrically pumped, efficient, and inexpensive integrated optical amplifiers and CW sources for use in optical communications systems. This final report discusses research into Er doped GaN and Si materials. Cathodoluminescence (CL) measurements have yielded strong Er3+ luminescence in Er and Oxygen implanted GaN films on sapphire and Er and 0 in sapphire. Multiple spectral peaks from the IR, through the visible, and into the near UV have been identified as atomic 4f shell transitions from the Er in sapphire. Photoluminescence (PL) using an Argon laser (514 nm) on one GaN:Er:O sample showed weaker luminescence at 1540 nm. The CL temperature dependence of the 1540 nm peak was found to drop by only a few percent from 6 K to 300 K in the GaN:Er:O. The intensity dropped to 25% of the 6 K value at 380 K. Refractive index measurements of some GaN:Er samples are also presented. Various Er-doped Si samples were studied. Some were implanted with Er while the others were grown epitaxially using chemical vapor deposition. PL of these samples was seen using an 80 mW 980 nm laser diode. (MM).
Download or read book Toward an Electrically pumped Silicon Laser written by Daniel B. Riley and published by . This book was released on 2007 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Erbium Lasers in Silicon Photonics written by Purnawirman and published by . This book was released on 2017 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present results on the development of integrated erbium-doped aluminum oxide lasers on a silicon photonics platform. A key achievement in this work is a scalable laser design for high output power and ultra-narrow linewidth performance. Using a novel wavelength-insensitive design, a CMOS compatible waveguide structure is proposed to achieve high confinement factor and intensity overlap for both the pump (980 nm) and signal (1550 nm) wavelengths. Laser operation in the C- and L- bands of the erbium gain spectrum is obtained with both a distributed Bragg reflector and a distributed feedback structure. We demonstrate power scaling with output power greater than 75 mW and obtain an ultra-narrow linewidth of 5.3 t 0.3 kHz. We investigate the influence of gain film thickness uniformity in distributed feedback laser performance and show a compensation scheme based on a curved cavity design. We then consider the application in optical communications by demonstrating a multiwavelength cascaded laser to generate wavelength division multiplexing (WDM) light sources. Finally, we propose an integration scheme of laser in full silicon photonics platform by using an erbium trench. The approach is alignment free and allows the erbium-doped film deposition to be the last backend process, providing a pathway to a scalable CMOS compatible laser device.
Download or read book Erbium Doped Quantum Dot and Si O and Plasmon Resonance Enabled Quantum Dot Nanoscale Lasers written by and published by . This book was released on 2009 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most significant accomplishments in this project are: (a) the demonstration of optically pumped silicon based light emitters utilizing colloidal PbSe QD which are inserted in PC microcavities for efficient coupling. Enhancements of spontaneous emission with a linewidth of-2.0 run, corresponding to a cavity Q factor of 775, is observed at 1550 nm at room temperature; (b) an electrically injected silicon based light source using PbSe QDs, which are more compact and versatile. With a current density of 113 mA/cm2, a resonance at X=1669 nm having a linewidth of 4nm is observed, which corresponds to a cavity Q factor of-420. This nanoscale light source based on silicon, which is capable of being fabricated on CMOS chips, is of interest as a practical technology for optical interconnects in silicon photonics; (c) the demonstration of possibility of surface Plasmon enabled nanolaser with round-trip gain in the sense that the transmission in the waveguide increases as the pumping power increases.
Download or read book Silicon Organic Hybrid Platform for Photonic Integrated Circuits written by Korn, Dietmar and published by KIT Scientific Publishing. This book was released on 2015-09-29 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the potential of the silicon-organic hybrid (SOH) platform for integrated optics. The unique properties of selected organic materials are added to silicon devices made with CMOS-based processes. We investigate the feasibility of this approach by making prototypes of key components in form of photonic integrated circuits: SOH lasers and SOH modulators are designed, fabricated, post-processed, and characterized. Application scenarios are identified.
Download or read book Ultralow Threshold Electrically Pumped Photonic Crystal Lasers written by Bryan Christopher Ellis and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The advantages of shrinking the cavity of a semiconductor laser to volumes on the order of the wavelength of light and below were realized more than 20 years ago. Within the last decade there has been extensive work developing techniques for confining light in nanoscale cavities such as photonic crystals and plasmonics. It is now considered relatively easy to demonstrate semiconductor nanocavity lasers where greater than 10% of the spontaneous emission is coupled to the laser mode, and researchers have recently been able to demonstrate nanolasers where the active volume consists of a single quantum dot. It has been predicted that these lasers will open up many applications such as on-chip optical interconnects, optical computing, photonic integrated circuits, high sensitivity optical sensors, in addition to novel physics. Before the work described in this thesis, the performance of optically pumped nanolasers was orders of magnitude better than electrically pumped devices due to the difficulty of efficient electrical pumping of nanoscale optical cavities. The main result of this thesis is the development of a practical and efficient way to electrically pump photonic crystal nanocavity lasers and other photonic crystal nanocavity devices (modulators, resonant cavity LEDs etc). Using this technique we were able to demonstrate a laser with a threshold of only 181nA at 50K, the lowest threshold ever observed in any type of electrically pumped laser. The design shows great promise for high speed operation, and we experimentally show that quantum dot photonic crystal lasers can achieve modulation rates of 30GHz and study the factors limiting the maximum modulation rate.
Download or read book Guided wave Erbium written by Chi-hung Huang and published by . This book was released on 1997 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Silicon Photonics written by Laurent Vivien and published by Taylor & Francis. This book was released on 2016-04-19 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of integrated silicon photonic circuits has recently been driven by the Internet and the push for high bandwidth as well as the need to reduce power dissipation induced by high data-rate signal transmission. To reach these goals, efficient passive and active silicon photonic devices, including waveguide, modulators, photodetectors,
Download or read book Silicon Photonics written by Lorenzo Pavesi and published by Springer Science & Business Media. This book was released on 2004-03-04 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a fascinating picture of the state-of-the-art in silicon photonics and a perspective on what can be expected in the near future. It is composed of a selected number of reviews authored by world leaders in the field and is written from both academic and industrial viewpoints. An in-depth discussion of the route towards fully integrated silicon photonics is presented. This book will be useful not only to physicists, chemists, materials scientists, and engineers but also to graduate students who are interested in the fields of microphotonics and optoelectronics.
Download or read book Silicon Photonics written by Graham T. Reed and published by John Wiley & Sons. This book was released on 2004-10-29 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing demand for instant and reliable communication means that photonic circuits are increasingly finding applications in optical communications systems. One of the prime candidates to provide satisfactory performance at low cost in the photonic circuit is silicon. Whilst silicon photonics is less well developed as compared to some other material technologies, it is poised to make a serious impact on the telecommunications industry, as well as in many other applications, as other technologies fail to meet the yield/performance/cost trade-offs. Following a sympathetic tutorial approach, this first book on silicon photonics provides a comprehensive overview of the technology. Silicon Photonics explains the concepts of the technology, taking the reader through the introductory principles, on to more complex building blocks of the optical circuit. Starting with the basics of waveguides and the properties peculiar to silicon, the book also features: Key design issues in optical circuits. Experimental methods. Evaluation techniques. Operation of waveguide based devices. Fabrication of silicon waveguide circuits. Evaluation of silicon photonic systems. Numerous worked examples, models and case studies. Silicon Photonics is an essential tool for photonics engineers and young professionals working in the optical network, optical communications and semiconductor industries. This book is also an invaluable reference and a potential main text to senior undergraduates and postgraduate students studying fibre optics, integrated optics, or optical network technology.
Download or read book Erbium fiber lasers for a frequency comb at 1560 nm written by Holger Hundertmark and published by Cuvillier Verlag. This book was released on 2006 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Erbium Doped Semiconductor Devices for Optoelectronics written by and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project involves the physics of luminescence of erbium (Er) in silicon (Si), with the goal of an electrically pumped Si laser operating at 1550 nm. The AASERT grant funds one graduate student, Mr. Bruce Willner. A liquid nitrogen cooled luminescence measurement system, capable of measuring waveguides, is described. Spectral measurements performed using this system are presented for Er doped glass, as well as two laser diodes at approx. 1490nm. Various Si samples were studied. One set were implanted with Er ions by Dr. F. Namavar at Spire Corp. while the other set were grown epitaxially with in Situ Er doping using CVD by Prof. Varhue at the University of Vermont. The particular sample preparation conditions are described. Photoluminescence of these samples was studied using the l490nm, 40mW laser diodes, and an argon laser at 514 nm. No PL signal has been detected from our Er-doped Si samples, although we obtained a spectrum from Er-doped glass. Cathodoluminescence using a 15kV, 20 micro A current beam, at 10K did not reveal any Er luminescence either. Future plans are described. jg p.2.
Download or read book Integrated Lasers on Silicon written by Charles Cornet and published by Elsevier. This book was released on 2016-07-14 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated Lasers on Silicon provides a comprehensive overview of the state-of-the-art use of lasers on silicon for photonic integration. The authors demonstrate the need for efficient laser sources on silicon, motivated by the development of on-board/on-chip optical interconnects and the different integration schemes available. The authors include detailed descriptions of Group IV-based lasers, followed by a presentation of the results obtained through the bonding approach (hybrid III-V lasers). The monolithic integration of III-V semiconductor lasers are explored, concluding with a discussion of the different kinds of cavity geometries benchmarked with respect to their potential integration on silicon in an industrial environment. Features a clear description of the advantages, drawbacks, and challenges of laser integration on silicon Serves as a staple reference in the general field of silicon photonics Focuses on the promising developments of hybrid and monolithic III-V lasers on silicon, previously unreviewed Discusses the different kinds of cavity geometries benchmarked with respect to their potential integration on silicon in an industrial environment
Download or read book Towards the First Silicon Laser written by Lorenzo Pavesi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon, the leading material in microelectronics during the last four decades, also promises to be the key material in the future. Despite many claims that silicon technology has reached fundamental limits, the performance of silicon microelectronics continues to improve steadily. The same holds for almost all the applications for which Si was considered to be unsuitable. The main exception to this positive trend is the silicon laser, which has not been demonstrated to date. The main reason for this comes from a fundamental limitation related to the indirect nature of the Si band-gap. In the recent past, many different approaches have been taken to achieve this goal: dislocated silicon, extremely pure silicon, silicon nanocrystals, porous silicon, Er doped Si-Ge, SiGe alloys and multiquantum wells, SiGe quantum dots, SiGe quantum cascade structures, shallow impurity centers in silicon and Er doped silicon. All of these are abundantly illustrated in the present book.
Download or read book SiGe Ge and Related Compounds 4 Materials Processing and Devices written by D. Harame and published by The Electrochemical Society. This book was released on 2010-10 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced semiconductor technology is depending on innovation and less on "classical" scaling. SiGe, Ge, and Related Compounds has become a key component in the arsenal in improving semiconductor performance. This symposium discusses the technology to form these materials, process them, FET devices incorporating them, Surfaces and Interfaces, Optoelectronic devices, and HBT devices.
Download or read book Integrated Nanophotonic Resonators written by Ya Sha Yi and published by CRC Press. This book was released on 2015-09-08 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid advancement of integrated optoelectronics has been driven considerably by miniaturization. Following the path taken in electronics of reducing devices to their ultimately fundamental forms, for instance single-electron transistors, now optical devices have also been scaled down, creating the increasingly active research fields of integrat
Download or read book Photonics Modelling and Design written by Slawomir Sujecki and published by CRC Press. This book was released on 2018-09-03 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photonics Modeling and Design delivers a concise introduction to the modeling and design of photonic devices. Assuming a general knowledge of photonics and the operating principles of fibre and semiconductor lasers, this book: Describes the analysis of the light propagation in dielectric media Discusses heat diffusion and carrier transport Applies the presented theory to develop fibre and semiconductor laser models Addresses the propagation of short optical pulses in optical fibres Puts all modeling into practical context with examples of devices currently in development or on the market Providing hands-on guidance in the form of MATLAB® scripts, tips, and other downloadable content, Photonics Modeling and Design is written for students and professionals interested in modeling photonic devices either for gaining a deeper understanding of the operation or to optimize the design.
