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Download or read book 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pankaj Kumar Choudhury
Publisher : BoD – Books on Demand
ISBN 13 : 1789234980
Total Pages : 148 pages
Book Rating : 4.7/5 (892 download)
Download or read book Optical Amplifiers written by Pankaj Kumar Choudhury and published by BoD – Books on Demand. This book was released on 2018-07-25 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical amplifiers are indispensable in long-haul communication systems operating in a relatively broad range of electromagnetic spectra. Various forms of optical amplifiers and their advancements have been extensively discussed in the literature emphasizing the relative merits and demerits of different types of configurations and/or designs and also usefulness in specific applications. The book - Optical Amplifiers: A Few Different Dimensions - aims at reporting developments in these devices in the recent years. The contributed chapters in this book encompass both theoretical and experimental results covering various aspects in the relevant research directions. This somehow makes the volume useful to both experts and novice researchers. Finally, the expectation remains of the contents to be of some merit for the R
Author : Heike Christopher
Publisher : Cuvillier Verlag
ISBN 13 : 3736963998
Total Pages : 206 pages
Book Rating : 4.7/5 (369 download)
Download or read book A compact mode-locked diode laser system for high precision frequency comparison experiments (Band 64) written by Heike Christopher and published by Cuvillier Verlag. This book was released on 2021-04-09 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical frequency combs (OFC) have revolutionized various applications in applied and fundamental sciences that rely on the determination of absolute optical frequencies and frequency differences. The latter requires only stabilization of the spectral distance between the individual comb lines of the OFC, allowing to tailor and reduce system complexity of the OFC generator (OFCG). One such application is the quantum test of the universality of free fall within the QUANTUS experimental series. Within the test, the rate of free fall of two atomic species, Rb and K, in micro-gravity will be compared. The aim of this thesis was the development of a highly compact, robust, and space-suitable diode laser-based OFCG with a mode-locked optical spectrum in the wavelength range around 780 nm. A diode laser-based OFCG was developed, which exceeds the requirements with a spectral bandwidth > 16 nm at 20 dBc, a comb line optical power > 650 nW (at 20 dBc), a pulse repetition rate of 3.4 GHz, and an RF linewidth of the free-running pulse repetition rate < 10 kHz. To realize a proof-of-concept demonstrator module, the diode laser-based OFCG was hybrid-integrated into a space-suitable technology platform that has been developed for future QUANTUS experiments. Proof of sufficient RF stability of the OFCG was provided by stabilizing the pulse repetition rate to an external RF reference. This resulted in a stabilized pulse repetition rate with an RF linewidth smaller than 1.4 Hz (resolution limited), thus exceeding the requirement. The developed diode laser-based OFCG represents an important step towards an improved comparison of the rate of free fall of Rb and K quantum gases within the QUANTUS experiments in micro-gravity.
Author : Matthias M. Karow
Publisher : Cuvillier Verlag
ISBN 13 : 3736966261
Total Pages : 143 pages
Book Rating : 4.7/5 (369 download)
Download or read book Broad-Area Laser Bars for 1 kW-Emission written by Matthias M. Karow and published by Cuvillier Verlag. This book was released on 2022-06-27 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: ndustrial laser systems for material processing applications rely on the availability of highly efficient, high-brightness diode lasers. GaAs-based broad-area laser bars play a vital role in such applications as pump sources for high-beam-quality solid-state lasers and, increasingly, as direct processing tools. This work studies 940 nm-laser bars emitting 1 kW optical power at room temperature, identifying those physical mechanisms that are currently limiting electrical-to-optical conversion efficiency as well as lateral beam quality. In the process, several diagnostic studies on bars with varied lateral-longitudinal design were carried out. The effects of technological measures for performance optimization were analyzed, yielding a new benchmark in efficiency and lateral divergence. The studies into altered resonator lengths of 4 and 6 mm as well as fill factors between 69 and 87 % successfully reduce both the voltage dropping across the device and power saturation at high currents, enabling 66 % efficiency at the operation point. Concrete measures how to reach efficiencies ≥70 % are presented thereafter, showing that doubling the efficiency value of the first 1 kW-demonstration in 2007 – amounting to 35 % – is in near reach. Investigation of the beam quality bases on a herein proposed and realized concept, in which the far field is resolved for each individual bar emitter. In this way, it is possible to determine how far-field profiles vary along the bar width and how much these variations affect the overall bar far-field. Further, such effects specific to bar structures can be separated into non-thermal and thermal influences. The effect of mechanical chip deformation (bar smile) as well as neighboring-emitter interaction has been investigated for the first time in active kW-class devices, yielding a lateral divergence as low as 8.8° at the operation point.
Author : IEEE Staff
Publisher :
ISBN 13 : 9781424440795
Total Pages : pages
Book Rating : 4.4/5 (47 download)
Download or read book 2009 Conference on Lasers and Electro-Optics Europe and 11th European Quantum Electronics Conference written by IEEE Staff and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Horia Chiriac
Publisher : Woodhead Publishing
ISBN 13 : 0128236000
Total Pages : 475 pages
Book Rating : 4.1/5 (282 download)
Download or read book Magnetic Sensors and Actuators in Medicine written by Horia Chiriac and published by Woodhead Publishing. This book was released on 2023-07-15 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Sensors and Actuators in Medicine: Materials, Devices, and Applications provides an overview of the various sensors and actuators, their characteristics, role in the development of medical applications, the medical problems they solve, and future directions. The book brings together recent advances in the physics, chemistry and engineering of magnetic materials related to sensors and actuators that improve their functions in medical applications. The book describes the main applications of magnetic sensors and actuators, starting from the common and emerging magnetic materials, their principles of operation, the medical problems that they are used to address, and the latest achievements in the field. - Reviews a wide range of magnetic sensors and actuators employed in medical applications such as diagnosis, surgery and therapy - Describes magnetic material-based sensors and actuators, including their operation principles, properties and optimization for specific applications - Includes examples of recent advances, such as emerging magnetic materials, magnetic nanowires, nanorods and/or nanotubes
Author : Kok Yeow You
Publisher : BoD – Books on Demand
ISBN 13 : 1789234921
Total Pages : 386 pages
Book Rating : 4.7/5 (892 download)
Download or read book Emerging Waveguide Technology written by Kok Yeow You and published by BoD – Books on Demand. This book was released on 2018-08-01 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, the rapid development of radiofrequency (RF)/microwave and photonic/optical waveguide technologies has had a significant impact on the current electronic industrial, medical and information and communication technology (ICT) fields. This book is a self-contained collection of valuable scholarly papers related to waveguide design, modeling, and applications. This book contains 20 chapters that cover three main subtopics of waveguide technologies, namely RF and microwave waveguide, photonic and optical waveguide and waveguide analytical solutions. Hence, this book is particularly useful to the academics, scientists, practicing researchers and postgraduate students whose work relates to the latest waveguide technologies.
Author : Costantino De Angelis
Publisher : CRC Press
ISBN 13 : 1351269747
Total Pages : 256 pages
Book Rating : 4.3/5 (512 download)
Download or read book Nonlinear Meta-Optics written by Costantino De Angelis and published by CRC Press. This book was released on 2020-05-20 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses fabrication as well as characterization and modeling of semiconductor nanostructures in the optical regime, with a focus on nonlinear effects. The visible range as well as near and far infrared spectral region will be considered with a view to different envisaged applications. The book covers the current key challenges of the research in the area, including: exploiting new material platforms, fully extending the device operation into the nonlinear regime, adding re-configurability to the envisaged devices and proposing new modeling tools to help in conceiving new functionalities. • Explores several topics in the field of semiconductor nonlinear nanophotonics, including fabrication, characterization and modeling of semiconductor nanostructures in the optical regime, with a focus on nonlinear effects • Describes the research challenges in the field of optical metasurfaces in the nonlinear regime • Reviews the use and achievements of all-dielectric nanoantennas for strengthening the nonlinear optical response • Describes both theoretical and experimental aspects of photonic devices based on semiconductor optical nanoantennas and metasurfaces • Gathers contributions from several leading groups in this research field to provide a thorough and complete overview of the current state of the art in the field of semiconductor nonlinear nanophotonics Costantino De Angelis has been full professor of electromagnetic fields at the University of Brescia since 1998. He is an OSA Fellow and has been responsible for several university research contracts in the last 20 years within Europe, the United States, and Italy. His technical interests are in optical antennas and nanophotonics. He is the author of over 150 peer-reviewed scientific journal articles. Giuseppe Leo has been a full professor in physics at Paris Diderot University since 2004, and in charge of the nonlinear devices group of MPQ Laboratory since 2006. His research areas include nonlinear optics, micro- and nano-photonics, and optoelectronics, with a focus on AlGaAs platform. He has coordinated several research programs and coauthored 100 peer-reviewed journal articles, 200 conference papers, 10 book chapters and also has four patents. Dragomir Neshev is a professor in physics and the leader of the experimental photonics group in the Nonlinear Physics Centre at Australian National University (ANU). His activities span over several branches of optics, including nonlinear periodic structures, singular optics, plasmonics, and photonic metamaterials. He has coauthored 200 publications in international peer-reviewed scientific journals.
Author : Shahram Latifi
Publisher : Springer
ISBN 13 : 3030140709
Total Pages : 652 pages
Book Rating : 4.0/5 (31 download)
Download or read book 16th International Conference on Information Technology-New Generations (ITNG 2019) written by Shahram Latifi and published by Springer. This book was released on 2019-05-22 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 16th International Conference on Information Technology - New Generations (ITNG), continues an annual event focusing on state of the art technologies pertaining to digital information and communications. The applications of advanced information technology to such domains as astronomy, biology, education, geosciences, security and health care are among topics of relevance to ITNG. Visionary ideas, theoretical and experimental results, as well as prototypes, designs, and tools that help the information readily flow to the user are of special interest. Machine Learning, Robotics, High Performance Computing, and Innovative Methods of Computing are examples of related topics. The conference features keynote speakers, the best student award, poster award, service award, a technical open panel, and workshops/exhibits from industry, government and academia.
Author :
Publisher : Academic Press
ISBN 13 : 0128155191
Total Pages : 242 pages
Book Rating : 4.1/5 (281 download)
Download or read book Silicon Photonics written by and published by Academic Press. This book was released on 2018-10-08 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon Photonics, Volume 99 in the Semiconductors and Semimetals series, highlights new advances in the field, with this updated volume presenting interesting chapters on Transfer printing in Silicon Photonics, Epitaxial integration of antimonide-based semiconductor lasers on Si, Photonic crystal lasers and nanolasers on Si, the Evolution of monolithic quantum-dot light source for silicon photonics, III-V on Si nanocomposites, the Heterogeneous integration of III-V on Si by bonding, the Growth of III-V on Silicon compliant substrates and lasers by MOCVD, Photonic Integrated Circuits on Si, Integrated Photonics for Bio- and Environmental sensing, Membrane Lasers/Photodiodes on Si, and more. - Provides the authority and expertise of leading contributors from an international board of authors - Represents the latest release in the Semiconductors and Semimetals series - Updated release includes the latest information on Silicon Photonics
Author : Nathalie Nagl
Publisher : Springer Nature
ISBN 13 : 3030897540
Total Pages : 155 pages
Book Rating : 4.0/5 (38 download)
Download or read book A New Generation of Ultrafast Oscillators for Mid-Infrared Applications written by Nathalie Nagl and published by Springer Nature. This book was released on 2022-02-01 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the first successful realization of a compact, low-noise, and few-cycle light source in the mid-infrared wavelength region. By developing the technology of pumping femtosecond chromium-doped II-VI laser oscillators directly with the emission of broad-stripe single-emitter laser diodes, coherent light was generated with exceptionally low amplitude noise — crucial for numerous applications including spectroscopy at high sensitivities. Other key parameters of the oscillator's output, such as pulse duration and output power, matched and even surpassed previous state-of-the-art systems. As a demonstration of its unique capabilities, the oscillator's powerful output was used to drive — without further amplification — the nonlinear generation of coherent mid-infrared light spanning multiple octaves. The resulting table-top system uniquely combines high brilliance and ultrabroad spectral bandwidth in the important mid-infrared spectral range. The rapid development of this technology is comprehensively and lucidly documented in this PhD thesis. Together with a thorough review of literature and applications, and an extensive analysis of the theoretical foundations behind ultrafast laser oscillators, the thesis will serve as a valuable reference for the construction of a new generation of mid-infrared light sources.
Author : Dr Hilke Bahmann
Publisher : Royal Society of Chemistry
ISBN 13 : 1839167416
Total Pages : 217 pages
Book Rating : 4.8/5 (391 download)
Download or read book Chemical Modelling Volume 17 written by Dr Hilke Bahmann and published by Royal Society of Chemistry. This book was released on 2022-12-19 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical modelling covers a wide range of disciplines, and this book is the first stop for any chemist, materials scientist, biochemist, or molecular physicist wishing to acquaint themselves with major developments in the applications and theory of chemical modelling. Containing both comprehensive and critical reviews, it is a convenient reference to the current literature. Coverage includes, but is not limited to, considerations towards rigorous foundations for the natural-orbital representation of molecular electronic transitions, quantum and classical embedding schemes for optical properties, machine learning for excited states, ultrafast and wave function-based electron dynamics, and attosecond chemistry.
Author : Piotr Witczak
Publisher : MDPI
ISBN 13 : 3036510486
Total Pages : 236 pages
Book Rating : 4.0/5 (365 download)
Download or read book Sensors Fault Diagnosis Trends and Applications written by Piotr Witczak and published by MDPI. This book was released on 2021-09-01 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fault diagnosis has always been a concern for industry. In general, diagnosis in complex systems requires the acquisition of information from sensors and the processing and extracting of required features for the classification or identification of faults. Therefore, fault diagnosis of sensors is clearly important as faulty information from a sensor may lead to misleading conclusions about the whole system. As engineering systems grow in size and complexity, it becomes more and more important to diagnose faulty behavior before it can lead to total failure. In the light of above issues, this book is dedicated to trends and applications in modern-sensor fault diagnosis.
Author : Christina Hofer
Publisher : Springer Nature
ISBN 13 : 3031153286
Total Pages : 131 pages
Book Rating : 4.0/5 (311 download)
Download or read book Detection Efficiency and Bandwidth Optimized Electro-Optic Sampling of Mid-Infrared Waves written by Christina Hofer and published by Springer Nature. This book was released on 2022-10-27 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the detection efficiency of field-resolved measurements of ultrashort mid-infrared waves via electro-optic sampling for the first time. Employing high-power gate pulses and phase-matched upconversion in thick nonlinear crystals, unprecedented efficiencies are achieved for octave-spanning fields in this wavelength range. In combination with state-of-the art, high-power, ultrashort mid-infrared sources, this allows to demonstrate a new regime of linear detection dynamic range for field strengths from mV/cm to MV/cm-levels. These results crucially contribute to the development of field-resolved spectrometers for early disease detection, as fundamental vibrational modes of (bio-)molecules lie in the investigated spectral range. The results are discussed and compared with previous sensitivity records for electric-field measurements and reference is made to related implementations of the described characterization technique. Including a detailed theoretical description and simulation results, the work elucidates crucial scaling laws, characteristics and limitations. The thesis will thus serve as an educational introduction to the topic of field-resolved measurements using electro-optic sampling, giving detailed instructions on simulations and experimental implementations. At the same time, it showcases the state-of-the-art in terms of detection sensitivity for characterizing mid-infrared waves.
Author : Mikhail G. Brik
Publisher : CRC Press
ISBN 13 : 1000000737
Total Pages : 462 pages
Book Rating : 4.0/5 ( download)
Download or read book Theoretical Spectroscopy of Transition Metal and Rare Earth Ions written by Mikhail G. Brik and published by CRC Press. This book was released on 2019-12-11 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes in detail the main concepts of theoretical spectroscopy of transition metal and rare-earth ions. It shows how the energy levels of different electron configurations are formed and calculated for the ions in a free state and in crystals, how group theory can help in solving main spectroscopic problems, and how the modern DFT-based methods of calculations of electronic structure can be combined with the semi-empirical crystal field models. The style of presentation makes the book helpful for a wide audience ranging from graduate students to experienced researchers. Performance of optical materials crucially depends on the impurity ions intentionally introduced into the crystalline host materials. The color of these materials, their emission and absorption spectra can be understood by analyzing the relations between the electronic properties of impurity ions and host crystal structure, which constitutes the main content of this book. It describes in detail the main concepts of theoretical spectroscopy of transition metal and rare earth ions.
Author : Mary E. Kinsella
Publisher : Springer Nature
ISBN 13 : 3030407799
Total Pages : 182 pages
Book Rating : 4.0/5 (34 download)
Download or read book Women in Aerospace Materials written by Mary E. Kinsella and published by Springer Nature. This book was released on 2020-05-20 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides insight into research and development of key aerospace materials that have enabled some of the most exciting air and space technologies in recent years. The stories are shared with you by the women who experienced them, those engineers and scientists in the labs, on the shop floors, or on the design teams contributing to the realization of these technologies. Their work contributes to the world in the challenging and vital field of aerospace materials, and their stories seethe with a pride and a passion for the opportunity to make these important contributions. As an important part of the Women in Science and Engineering book series, the work highlights the contribution of women leaders in Aerospace Materials, inspiring women and men, girls and boys to enter and apply themselves to secure our future in an increasingly connected world.
Author : David Reitze
Publisher : World Scientific
ISBN 13 : 9813146095
Total Pages : 808 pages
Book Rating : 4.8/5 (131 download)
Download or read book Advanced Interferometric Gravitational-wave Detectors (In 2 Volumes) written by David Reitze and published by World Scientific. This book was released on 2019-03-25 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: The detection of gravitational waves in 2015 has been hailed a scientific breakthrough and one of the most significant scientific discoveries of the 21st century. Gravitational-wave physics and astronomy are emerging as a new frontier in understanding the universe.Advanced Interferometric Gravitational-Wave Detectors brings together many of the world's top experts to deliver an authoritative and in-depth treatment on current and future detectors. Volume I is devoted to the essentials of gravitational-wave detectors, presenting the physical principles behind large-scale precision interferometry, the physics of the underlying noise sources that limit interferometer sensitivity, and an explanation of the key enabling technologies that are used in the detectors. Volume II provides an in-depth look at the Advanced LIGO and Advanced Virgo interferometers, as well as examining future interferometric detector concepts. This two-volume set will provide students and researchers the comprehensive background needed to understand gravitational-wave detectors.
