Terahertz Quantum Cascade Structures Using Step Wells And Longitudinal Optical Phonon Scattering

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Spectroscopic Applications of Terahertz Quantum-Cascade Lasers

Author : Tasmim Alam
Publisher : Cuvillier Verlag
ISBN 13 : 3736962975
Total Pages : 132 pages
Book Rating : 4.7/5 (369 download)

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Book Synopsis Spectroscopic Applications of Terahertz Quantum-Cascade Lasers by : Tasmim Alam

Download or read book Spectroscopic Applications of Terahertz Quantum-Cascade Lasers written by Tasmim Alam and published by Cuvillier Verlag. This book was released on 2020-10-29 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum cascade lasers (QCLs) are attractive for high-resolution spectroscopy because they can provide high power and a narrow linewidth. They are particularly promising in the terahertz (THz) range since they can be used as local oscillators for heterodyne detection as well as transmitters for direct detection. However, THz QCL-based technologies are still under development and are limited by the lack of frequency tunability as well as the frequency and output power stability for free-running operation. In this dissertation, frequency tuning and linewidth of THz QCLs are studied in detail by using rotational spectroscopic features of molecular species. In molecular spectroscopy, the Doppler eff ect broadens the spectral lines of molecules in the gas phase at thermal equilibrium. Saturated absorption spectroscopy has been performed that allows for sub-Doppler resolution of the spectral features. One possible application is QCL frequency stabilization based on the Lamb dip. Since the tunability of the emission frequency is an essential requirement to use THz QCL for high-resolution spectroscopy, a new method has been developed that relies on near-infrared (NIR) optical excitation of the QCL rear-facet. A wide tuning range has been achieved by using this approach. The scheme is straightforward to implement, and the approach can be readily applied to a large class of THz QCLs. The frequency and output stability of the local oscillator has a direct impact on the performance and consistency of the heterodyne spectroscopy. A technique has been developed for a simultaneous stabilization of the frequency and output power by taking advantage of the frequency and power regulation by NIR excitation. The results presented in this thesis will enable the routine use of THz QCLs for spectroscopic applications in the near future.

Handbook of GaN Semiconductor Materials and Devices

Author : Wengang (Wayne) Bi
Publisher : CRC Press
ISBN 13 : 1351648055
Total Pages : 775 pages
Book Rating : 4.3/5 (516 download)

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Book Synopsis Handbook of GaN Semiconductor Materials and Devices by : Wengang (Wayne) Bi

Download or read book Handbook of GaN Semiconductor Materials and Devices written by Wengang (Wayne) Bi and published by CRC Press. This book was released on 2017-10-20 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses material growth, device fabrication, device application, and commercialization of energy-efficient white light-emitting diodes (LEDs), laser diodes, and power electronics devices. It begins with an overview on basics of semiconductor materials, physics, growth and characterization techniques, followed by detailed discussion of advantages, drawbacks, design issues, processing, applications, and key challenges for state of the art GaN-based devices. It includes state of the art material synthesis techniques with an overview on growth technologies for emerging bulk or free standing GaN and AlN substrates and their applications in electronics, detection, sensing, optoelectronics and photonics. Wengang (Wayne) Bi is Distinguished Chair Professor and Associate Dean in the College of Information and Electrical Engineering at Hebei University of Technology in Tianjin, China. Hao-chung (Henry) Kuo is Distinguished Professor and Associate Director of the Photonics Center at National Chiao-Tung University, Hsin-Tsu, Taiwan, China. Pei-Cheng Ku is an associate professor in the Department of Electrical Engineering & Computer Science at the University of Michigan, Ann Arbor, USA. Bo Shen is the Cheung Kong Professor at Peking University in China.

Chemical Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 2566 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Chemical Abstracts by :

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2566 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Iii-nitride Materials, Devices And Nano-structures

Author : Zhe Chuan Feng
Publisher : World Scientific
ISBN 13 : 1786343207
Total Pages : 424 pages
Book Rating : 4.7/5 (863 download)

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Book Synopsis Iii-nitride Materials, Devices And Nano-structures by : Zhe Chuan Feng

Download or read book Iii-nitride Materials, Devices And Nano-structures written by Zhe Chuan Feng and published by World Scientific. This book was released on 2017-04-20 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Group III-Nitrides semiconductor materials, including GaN, InN, AlN, InGaN, AlGaN and AlInGaN, i.e. (Al, In, Ga)N, are excellent semiconductors, covering the spectral range from deep ultraviolet (DUV) to UV, visible and infrared, with unique properties very suitable for modern electronic and optoelectronic applications. Remarkable breakthroughs have been achieved in recent years for research and development (R&D) in these materials and devices, such as high-power and high brightness UV-blue-green-white light emitting diodes (LEDs), UV-blue-green laser diodes (LDs), photo-detectors and various optoelectronics and electronics devices and applications.The Nobel Prize in Physics 2014 was awarded jointly to Isamu Akasaki, Hiroshi Amano and Shuji Nakamura 'for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources'. Red and green diodes had been invented since 1960s-70s but without blue LED. Despite considerable efforts, the blue LED had remained a challenge for a long time. The success and inventions on GaN-based LEDs were revolutionary and benefiting for mankind. III-Nitrides-based industry has formed and acquired rapid developments over the world. Incandescent light bulbs lit the 20th century and the 21st century will be lit by LED lamps.Before this book, the editor has edited two books, III-Nitride Semiconductor Materials (2006) and III-Nitride Devices and Nanoengineering (2008), both published by ICP/WSP, in the fields of III-Nitride. The developments of these materials and devices are moving rapidly. Many data or knowledge, some even just published only recently, have been modified and needed to be upgraded. This new book, III-Nitride Materials, Devices and Nano-Structures as the third instalment, will cover the rapid new developments and achievements in the III-Nitride fields, particularly those made since 2009.

Molecular Beam Epitaxy

Author : Hajime Asahi
Publisher : John Wiley & Sons
ISBN 13 : 1119355001
Total Pages : 514 pages
Book Rating : 4.1/5 (193 download)

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Book Synopsis Molecular Beam Epitaxy by : Hajime Asahi

Download or read book Molecular Beam Epitaxy written by Hajime Asahi and published by John Wiley & Sons. This book was released on 2019-01-30 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers both the fundamentals and the state-of-the-art technology used for MBE Written by expert researchers working on the frontlines of the field, this book covers fundamentals of Molecular Beam Epitaxy (MBE) technology and science, as well as state-of-the-art MBE technology for electronic and optoelectronic device applications. MBE applications to magnetic semiconductor materials are also included for future magnetic and spintronic device applications. Molecular Beam Epitaxy: Materials and Applications for Electronics and Optoelectronics is presented in five parts: Fundamentals of MBE; MBE technology for electronic devices application; MBE for optoelectronic devices; Magnetic semiconductors and spintronics devices; and Challenge of MBE to new materials and new researches. The book offers chapters covering the history of MBE; principles of MBE and fundamental mechanism of MBE growth; migration enhanced epitaxy and its application; quantum dot formation and selective area growth by MBE; MBE of III-nitride semiconductors for electronic devices; MBE for Tunnel-FETs; applications of III-V semiconductor quantum dots in optoelectronic devices; MBE of III-V and III-nitride heterostructures for optoelectronic devices with emission wavelengths from THz to ultraviolet; MBE of III-V semiconductors for mid-infrared photodetectors and solar cells; dilute magnetic semiconductor materials and ferromagnet/semiconductor heterostructures and their application to spintronic devices; applications of bismuth-containing III–V semiconductors in devices; MBE growth and device applications of Ga2O3; Heterovalent semiconductor structures and their device applications; and more. Includes chapters on the fundamentals of MBE Covers new challenging researches in MBE and new technologies Edited by two pioneers in the field of MBE with contributions from well-known MBE authors including three Al Cho MBE Award winners Part of the Materials for Electronic and Optoelectronic Applications series Molecular Beam Epitaxy: Materials and Applications for Electronics and Optoelectronics will appeal to graduate students, researchers in academia and industry, and others interested in the area of epitaxial growth.

Dissertation Abstracts International

Author :
Publisher :
ISBN 13 :
Total Pages : 426 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Dissertation Abstracts International by :

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Intersubband Transitions in Quantum Wells: Physics and Device Applications II

Author :
Publisher : Academic Press
ISBN 13 : 0080864643
Total Pages : 257 pages
Book Rating : 4.0/5 (88 download)

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Book Synopsis Intersubband Transitions in Quantum Wells: Physics and Device Applications II by :

Download or read book Intersubband Transitions in Quantum Wells: Physics and Device Applications II written by and published by Academic Press. This book was released on 1999-10-25 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intersubband Transitions in Quantum Wells: Physics and Device Applications II

Mid-infrared Semiconductor Optoelectronics

Author : Anthony Krier
Publisher : Springer
ISBN 13 : 1846282098
Total Pages : 756 pages
Book Rating : 4.8/5 (462 download)

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Book Synopsis Mid-infrared Semiconductor Optoelectronics by : Anthony Krier

Download or read book Mid-infrared Semiconductor Optoelectronics written by Anthony Krier and published by Springer. This book was released on 2007-05-22 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optoelectronic devices operating in the mid-infrared wavelength range offer applications in a variety of areas from environmental gas monitoring around oil rigs to the detection of narcotics. They could also be used for free-space optical communications, thermal imaging applications and the development of "homeland security" measures. Mid-infrared Semiconductor Optoelectronics is an overview of the current status and technological development in this rapidly emerging area; the basic physics, some of the problems facing the design engineer and a comparison of possible solutions are laid out; the different lasers used as sources for mid-infrared technology are considered; recent work in detectors is reviewed; the last part of the book is concerned with applications. With a world-wide authorship of experts working in many mid-infrared-related fields this book will be an invaluable reference for researchers and graduate students drawn from physics, electronic and electrical engineering and materials science.

Terahertz Frequency Detection and Identification of Materials and Objects

Author : R.E. Miles
Publisher : Springer Science & Business Media
ISBN 13 : 1402065035
Total Pages : 365 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Terahertz Frequency Detection and Identification of Materials and Objects by : R.E. Miles

Download or read book Terahertz Frequency Detection and Identification of Materials and Objects written by R.E. Miles and published by Springer Science & Business Media. This book was released on 2007-09-08 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Want an overview of where the technology of terahertz detection has been going? Here it is. The technology has largely been developed around expensive and bulky femtosecond laser systems but, as described in this book, advances in semiconductor superlattice technology are leading to compact "electronic" sources such as the quantum cascade laser, two-terminal "Gunn" type oscillators and even a THz frequency amplifier. These advances towards electronic (as opposed to optical) THz systems mean that the technology will become portable and much less costly.

Handbook of Terahertz Technologies

Author : Ho-Jin Song
Publisher : CRC Press
ISBN 13 : 9814613096
Total Pages : 606 pages
Book Rating : 4.8/5 (146 download)

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Book Synopsis Handbook of Terahertz Technologies by : Ho-Jin Song

Download or read book Handbook of Terahertz Technologies written by Ho-Jin Song and published by CRC Press. This book was released on 2015-04-15 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terahertz waves, which lie in the frequency range of 0.1-10 THz, have long been investigated in a few limited fields, such as astronomy, because of a lack of devices for their generation and detection. Several technical breakthroughs made over the last couple of decades now allow us to radiate and detect terahertz waves more easily, which has trigg

2D Materials

Author : Phaedon Avouris
Publisher : Cambridge University Press
ISBN 13 : 1316738132
Total Pages : 521 pages
Book Rating : 4.3/5 (167 download)

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Book Synopsis 2D Materials by : Phaedon Avouris

Download or read book 2D Materials written by Phaedon Avouris and published by Cambridge University Press. This book was released on 2017-06-29 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn about the most recent advances in 2D materials with this comprehensive and accessible text. Providing all the necessary materials science and physics background, leading experts discuss the fundamental properties of a wide range of 2D materials, and their potential applications in electronic, optoelectronic and photonic devices. Several important classes of materials are covered, from more established ones such as graphene, hexagonal boron nitride, and transition metal dichalcogenides, to new and emerging materials such as black phosphorus, silicene, and germanene. Readers will gain an in-depth understanding of the electronic structure and optical, thermal, mechanical, vibrational, spin and plasmonic properties of each material, as well as the different techniques that can be used for their synthesis. Presenting a unified perspective on 2D materials, this is an excellent resource for graduate students, researchers and practitioners working in nanotechnology, nanoelectronics, nanophotonics, condensed matter physics, and chemistry.

Quantum Wells, Wires and Dots

Author : Paul Harrison
Publisher : John Wiley & Sons
ISBN 13 : 0470010819
Total Pages : 511 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Quantum Wells, Wires and Dots by : Paul Harrison

Download or read book Quantum Wells, Wires and Dots written by Paul Harrison and published by John Wiley & Sons. This book was released on 2005-10-31 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Wells, Wires and Dots Second Edition: Theoretical andComputational Physics of Semiconductor Nanostructures providesall the essential information, both theoretical and computational,for complete beginners to develop an understanding of how theelectronic, optical and transport properties of quantum wells,wires and dots are calculated. Readers are lead through a series ofsimple theoretical and computational examples giving solidfoundations from which they will gain the confidence to initiatetheoretical investigations or explanations of their own. Emphasis on combining the analysis and interpretation ofexperimental data with the development of theoretical ideas Complementary to the more standard texts Aimed at the physics community at large, rather than just thelow-dimensional semiconductor expert The text present solutions for a large number of realsituations Presented in a lucid style with easy to follow steps related toaccompanying illustrative examples

Handbook of Laser Technology and Applications

Author : Chunlei Guo
Publisher : CRC Press
ISBN 13 : 100029692X
Total Pages : 495 pages
Book Rating : 4.0/5 (2 download)

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Book Synopsis Handbook of Laser Technology and Applications by : Chunlei Guo

Download or read book Handbook of Laser Technology and Applications written by Chunlei Guo and published by CRC Press. This book was released on 2021-06-23 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive handbook gives a fully updated guide to lasers and laser technologies, including the complete range of their technical applications. This forth volume covers laser applications in the medical, metrology and communications fields. Key Features: • Offers a complete update of the original, bestselling work, including many brand-new chapters. • Deepens the introduction to fundamentals, from laser design and fabrication to host matrices for solid-state lasers, energy level diagrams, hosting materials, dopant energy levels, and lasers based on nonlinear effects. • Covers new laser types, including quantum cascade lasers, silicon-based lasers, titanium sapphire lasers, terahertz lasers, bismuth-doped fiber lasers, and diode-pumped alkali lasers. • Discusses the latest applications, e.g., lasers in microscopy, high-speed imaging, attosecond metrology, 3D printing, optical atomic clocks, time-resolved spectroscopy, polarization and profile measurements, pulse measurements, and laser-induced fluorescence detection. • Adds new sections on laser materials processing, laser spectroscopy, lasers in imaging, lasers in environmental sciences, and lasers in communications. This handbook is the ideal companion for scientists, engineers, and students working with lasers, including those in optics, electrical engineering, physics, chemistry, biomedicine, and other relevant areas.

DX Centers

Author : Elias Munoz Merino
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3035706530
Total Pages : 183 pages
Book Rating : 4.0/5 (357 download)

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Book Synopsis DX Centers by : Elias Munoz Merino

Download or read book DX Centers written by Elias Munoz Merino and published by Trans Tech Publications Ltd. This book was released on 1994-02-02 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Donors in AlGaAs and Related Compounds

Concepts and Applications of Nonlinear Terahertz Spectroscopy

Author : Thomas Elsaesser
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1643272160
Total Pages : 159 pages
Book Rating : 4.6/5 (432 download)

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Book Synopsis Concepts and Applications of Nonlinear Terahertz Spectroscopy by : Thomas Elsaesser

Download or read book Concepts and Applications of Nonlinear Terahertz Spectroscopy written by Thomas Elsaesser and published by Morgan & Claypool Publishers. This book was released on 2019-02-22 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terahertz (THz) radiation with frequencies between 100 GHz and 30 THz has developed into an important tool of science and technology, with numerous applications in materials characterization, imaging, sensor technologies, and telecommunications. Recent progress in THz generation has provided ultrashort THz pulses with electric field amplitudes of up to several megavolts/cm. This development opens the new research field of nonlinear THz spectroscopy in which strong light-matter interactions are exploited to induce quantum excitations and/or charge transport and follow their nonequilibrium dynamics in time-resolved experiments. This book introduces methods of THz generation and nonlinear THz spectroscopy in a tutorial way, discusses the relevant theoretical concepts, and presents prototypical, experimental, and theoretical results in condensed matter physics. The potential of nonlinear THz spectroscopy is illustrated by recent research, including an overview of the relevant literature.

Advances in Semiconductor Lasers and Applications to Optoelectronics

Author : Mitra Dutta
Publisher : World Scientific
ISBN 13 : 9789810242572
Total Pages : 458 pages
Book Rating : 4.2/5 (425 download)

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Book Synopsis Advances in Semiconductor Lasers and Applications to Optoelectronics by : Mitra Dutta

Download or read book Advances in Semiconductor Lasers and Applications to Optoelectronics written by Mitra Dutta and published by World Scientific. This book was released on 2000 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword by Charles H Townes This volume includes highlights of the theories underlying the essential phenomena occurring in novel semiconductor lasers as well as the principles of operation of selected heterostructure lasers. To understand scattering processes in heterostructure lasers and related optoelectronic devices, it is essential to consider the role of dimensional confinement of charge carriers as well as acoustical and optical phonons in quantum structures. Indeed, it is important to consider the confinement of both phonons and carriers in the design and modeling of novel semiconductor lasers such as the tunnel injection laser, quantum well intersubband lasers, and quantum dot lasers. The full exploitation of dimensional confinement leads to the exciting new capability of scattering time engineering in novel semiconductor lasers.As a result of continuing advances in techniques for growing quantum heterostructures, recent developments are likely to be followed in coming years by many more advances in semiconductor lasers and optoelectronics. As our understanding of these devices and the ability to fabricate them grow, so does our need for more sophisticated theories and simulation methods bridging the gap between quantum and classical transport.

Quantum Confined Laser Devices

Author : Peter Blood
Publisher : Oxford University Press
ISBN 13 : 0199644519
Total Pages : 433 pages
Book Rating : 4.1/5 (996 download)

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Book Synopsis Quantum Confined Laser Devices by : Peter Blood

Download or read book Quantum Confined Laser Devices written by Peter Blood and published by Oxford University Press. This book was released on 2015 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semiconductor laser, invented over 50 years ago, has had an enormous impact on the digital technologies that now dominate so many applications in business, commerce and the home. The laser is used in all types of optical fibre communication networks that enable the operation of the internet, e-mail, voice and skype transmission. Approximately one billion are produced each year for a market valued at around $5 billion. Nearly all semiconductor lasers now use extremely thin layers of light emitting materials (quantum well lasers). Increasingly smaller nanostructures are used in the form of quantum dots. The impact of the semiconductor laser is surprising in the light of the complexity of the physical processes that determine the operation of every device. This text takes the reader from the fundamental optical gain and carrier recombination processes in quantum wells and quantum dots, through descriptions of common device structures to an understanding of their operating characteristics. It has a consistent treatment of both quantum dot and quantum well structures taking full account of their dimensionality, which provides the reader with a complete account of contemporary quantum confined laser diodes. It includes plenty of illustrations from both model calculations and experimental observations. There are numerous exercises, many designed to give a feel for values of key parameters and experience obtaining quantitative results from equations. Some challenging concepts, previously the subject matter of research monographs, are treated here at this level for the first time. To request a copy of the Solutions Manual, visit http: //global.oup.com/uk/academic/physics/admin/solutions.