Nonlinear THz Spectroscopy on N-type GaAs PDF Download

Author: Peter Gaál
Publisher:
ISBN:
Category :
Languages : en
Pages : 167

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Author: Thomas Elsaesser
Publisher: Morgan & Claypool Publishers
ISBN: 1643272160
Category : Science
Languages : en
Pages : 159

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Book Description
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.

Author: Paul Corkum
Publisher: Springer Science & Business Media
ISBN: 3540687815
Category : Science
Languages : en
Pages : 853

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Book Description
This book summarizes the results presented at the 15th International Conference on Ultrafast Phenomena and provides an up-to-date view of this important field. It presents the latest advances in ultrafast science, including both ultrafast optical technology and the study of ultrafast phenomena. It covers picosecond, femtosecond, and attosecond processes relevant to applications in physics, chemistry, biology, and engineering.

Author: Sergey Ganichev
Publisher: Oxford University Press, USA
ISBN: 0198528302
Category : Language Arts & Disciplines
Languages : en
Pages : 431

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Book Description
This work presents the first comprehensive treatment of high-power terahertz applications to semiconductors and low-dimensional semiconductor structures. Terahertz properties of semiconductors are in the centre of scientific activities because of the need of high-speed electronics.

Author: Uwe Bovensiepen
Publisher: John Wiley & Sons
ISBN: 352763343X
Category : Science
Languages : en
Pages : 631

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Book Description
This two-volume work covers ultrafast structural and electronic dynamics of elementary processes at solid surfaces and interfaces, presenting the current status of photoinduced processes. Providing valuable introductory information for newcomers to this booming field of research, it investigates concepts and experiments, femtosecond and attosecond time-resolved methods, as well as frequency domain techniques. The whole is rounded off by a look at future developments.

Author: Zhigang Chen
Publisher: Springer
ISBN: 1461435382
Category : Science
Languages : en
Pages : 388

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Book Description
Nonlinear Photonics and Novel Optical Phenomena contains contributed chapters from leading experts in nonlinear optics and photonics, and provides a comprehensive survey of fundamental concepts as well as hot topics in current research on nonlinear optical waves and related novel phenomena. The book covers self-accelerating airy beams, integrated photonics based on high index doped-silica glass, linear and nonlinear spatial beam dynamics in photonic lattices and waveguide arrays, the theory of polariton solitons in semiconductor microcavities, and Terahertz waves.

Author: Rolf Haug
Publisher: Springer Science & Business Media
ISBN: 3540743251
Category : Science
Languages : en
Pages : 345

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Book Description
The 2007 Spring Meeting of the Arbeitskreis Festkörperphysik was held in Regensburg, Germany, March 2007, in conjunction with the Deutsche Physikalische Gesellschaft. It was one of the largest physics meetings in Europe. The present volume 47 of the Advances in Solid State Physics contains written versions of a large number of the invited talks and gives an overview of the present status of solid state physics where low-dimensional systems are dominating.

Author: Susan L. Dexheimer
Publisher: CRC Press
ISBN: 1351837656
Category : Technology & Engineering
Languages : en
Pages : 439

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Book Description
The development of new sources and methods in the terahertz spectral range has generated intense interest in terahertz spectroscopy and its application in an array of fields. Presenting state-of-the-art terahertz spectroscopic techniques, Terahertz Spectroscopy: Principles and Applications focuses on time-domain methods based on femtosecond laser sources and important recent applications in physics, materials science, chemistry, and biomedicine. The first section of the book examines instrumentation and methods for terahertz spectroscopy. It provides a comprehensive treatment of time-domain terahertz spectroscopic measurements, including methods for the generation and detection of terahertz radiation, methods for determining optical constants from time-domain measurements, and the use of femtosecond time-resolved techniques. The last two sections explore a variety of applications of terahertz spectroscopy in physics, materials science, chemistry, and biomedicine. With chapters contributed by leading experts in academia, industry, and research, this volume thoroughly discusses methods and applications, setting it apart from other recent books in this emerging terahertz field.

Author: Qiang Wang
Publisher: John Wiley & Sons
ISBN: 3527350594
Category : Technology & Engineering
Languages : en
Pages : 373

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Book Description
Comprehensive resource covering concepts, perspectives, and skills required to understand the preparation, nonlinear optics, and applications of two-dimensional (2D) materials Bringing together many interdisciplinary experts in the field of 2D materials with their applications in nonlinear optics, Two-Dimensional Materials for Nonlinear Optics covers preparation methods for various novel 2D materials, such as transition metal dichalcogenides (TMDs) and single elemental 2D materials, excited-state dynamics of 2D materials behind their outstanding performance in photonic devices, instrumentation for exploring the photoinduced excited-state dynamics of the 2D materials spanning a wide time scale from ultrafast to slow, and future trends of 2D materials on a series of issues like fabrications, dynamic investigations, and photonic/optoelectronic applications. Powerful nonlinear optical characterization techniques, such as Z-scan measurement, femtosecond transient absorption spectroscopy, and microscopy are also introduced. Edited by two highly qualified academics with extensive experience in the field, Two-Dimensional Materials for Nonlinear Optics covers sample topics such as: Foundational knowledge on nonlinear optical properties, and fundamentals and preparation methods of 2D materials with nonlinear optical properties Modulation and enhancement of optical nonlinearity in 2D materials, and nonlinear optical characterization techniques for 2D materials and their applications in a specific field Novel nonlinear optical imaging systems, ultrafast time-resolved spectroscopy for investigating carrier dynamics in emerging 2D materials, and transient terahertz spectroscopy 2D materials for optical limiting, saturable absorber, second and third harmonic generation, nanolasers, and space use With collective insight from researchers in many different interdisciplinary fields, Two-Dimensional Materials for Nonlinear Optics is an essential resource for materials scientists, solid state chemists and physicists, photochemists, and professionals in the semiconductor industry who are interested in understanding the state of the art in the field.

Author: Harold Young Hwang
Publisher:
ISBN:
Category :
Languages : en
Pages : 231

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Book Description
In this work, I describe experiments utilizing high-field terahertz (THz) pulses to initiate nonlinear responses in several classes of materials. We have developed several methods for interrogating the nonlinear THz response of materials including collinear and noncollinear THz-pump/THz-probe spectroscopy, and THz-pump/optical probe spectroscopies including THz Kerr effect spectroscopy. We have observed nonlinear free-carrier absorption, occurring through the saturation of free-carrier mobility in bulk semiconductors. We have demonstrated that highly energetic electrons in the conduction band can generate electron-hole pairs in indium antimonide, and have elucidated the dynamics of the carrier generation process. We have observed nonlinear conductivity responses in graphene, showing that a strong THz pulse can heat the electron distribution leading to saturable absorption in the THz range. We have demonstrated THz-induced optical anisotropy in simple liquids, allowing for the measurement of subsequent orientational dynamics. We have driven nonlinear vibrational dynamics in ferroelectrics, demonstrating that the strong anharmonicity of lattice vibrational modes can induce an anisotropic optical response. We have begun to study nonlinear vibrational responses in molecular crystals, which is of importance in mode coupling and energy transfer processes in the THz range. Finally, we have driven nonlinear metamaterial responses in gallium arsenide and vanadium dioxide. In GaAs, we have shown that metamaterial properties may be tuned by an intense THz field if the substrate material (GaAs) is changed by the incident THz pulse, and we have demonstrated carrier multiplication locally in the metamaterial split ring resonator gaps where substantial electric field enhancement occurs. In VO2, we have shown that THz radiation can drive an insulator-to-metal phase transition, opening up new possibilities in the control of the states of matter with THz fields. This work has demonstrated only a few of the capabilities made possible by the interaction of intense THz radiation with matter, and provides a general framework to open up new research in a nascent field.