femtosecond laser spectroscopy

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Femtosecond Laser Spectroscopy

Author : Peter Hannaford
ISBN : 0387232931
Genre : Technology & Engineering
File Size : 28. 35 MB
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The embryonic development of femtoscience stems from advances made in the generation of ultrashort laser pulses. Beginning with mode-locking of glass lasers in the 1960s, the development of dye lasers brought the pulse width down from picoseconds to femtoseconds. The breakthrough in solid state laser pulse generation provided the current reliable table-top laser systems capable of average power of about 1 watt, and peak power density of easily watts per square centimeter, with pulse widths in the range of four to eight femtoseconds. Pulses with peak power density reaching watts per square centimeter have been achieved in laboratory settings and, more recently, pulses of sub-femtosecond duration have been successfully generated. As concepts and methodologies have evolved over the past two decades, the realm of ultrafast science has become vast and exciting and has impacted many areas of chemistry, biology and physics, and other fields such as materials science, electrical engineering, and optical communication. In molecular science the explosive growth of this research is for fundamental reasons. In femtochemistry and femtobiology chemical bonds form and break on the femtosecond time scale, and on this scale of time we can freeze the transition states at configurations never before seen. Even for n- reactive physical changes one is observing the most elementary of molecular processes. On a time scale shorter than the vibrational and rotational periods the ensemble behaves coherently as a single-molecule trajectory.

Semiconductors Probed By Ultrafast Laser Spectroscopy

Author : R. R. Alfano
ISBN : 9780323148863
Genre : Science
File Size : 42. 19 MB
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Semiconductors Probed by Ultrafast Laser Spectroscopy, Volume 1 discusses the use of ultrafast laser spectroscopy in studying fast physics in semiconductors. It reviews progress on the experimental and theoretical understanding of ultrafast events that occur on a picosecond and nanosecond time scale. This volume first explores the relaxation of energy and the momentum of hot carriers and then turns to relaxation of plasmas and phonons. It also discusses the dynamics of excitons, polaritons, and excitonic molecules and reviews transient transport and diffusion of carriers. Scientists, engineers, and graduate students will find this book invaluable.

Biological Events Probed By Ultrafast Laser Spectroscopy

Author : R. R. Alfano
ISBN : 9780323149587
Genre : Science
File Size : 50. 15 MB
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Biological Events Probed by Ultrafast Laser Spectroscopy summarizes the progress in the experimental and theoretical understanding of primary phenomena occurring in biology on a picoseconds and nanosecond time scale. This book includes basic principles, survey of research results, and thinking of experts in the fields of photosynthesis, vision, hemoglobin, and DNA. This reference is organized into five parts. The primary events in the various areas of biology are reviewed in the first four parts. The last part covers the picosecond and subpicosecond laser techniques. Primary processes in photosynthesis are then discussed. This is followed by chapters on fluorescence and absorption kinetic measurements in higher plants. Subsequent chapters cover kinetic measurements in bacteria photosynthesis, theories of primary energy transfer appropriate to photosynthesis, and multiexcitation processes. Part II examines primary visual processes, including kinetic experimental work on rhodopsin and bacteriorhodopsin, and theoretical concepts on primary events in vision. The third part presents the introductory materials on the kinetic models of hemoglobin and myoglobin. It also discusses the interesting picosecond measurements on these proteins. Part IV focuses on the application of modern ultrafast temporal techniques to the study of DNA and its components, as well as DNA-dye complexes. The concluding part introduces the principles of design and operation of the solid state laser and picoseconds spectroscopy methods. A discussion on pulse generation methods and measurement techniques applicable for measuring primary events in biological systems is provided. This book is useful both for the newbies and experts in the field of ultrafast phenomena. It aims to attract biologists, chemists, physicists, and engineers who are interested in biological processes. It will help readers find all the necessary and relevant material in one presentation.

Introduction To Laser Spectroscopy

Author : Halina Abramczyk
ISBN : 0080455255
Genre : Science
File Size : 40. 20 MB
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Introduction to Laser Spectroscopy is a well-written, easy-to-read guide to understanding the fundamentals of lasers, experimental methods of modern laser spectroscopy and applications. It provides a solid grounding in the fundamentals of many aspects of laser physics, nonlinear optics, and molecular spectroscopy. In addition, by comprehensively combining theory and experimental techniques it explicates a variety of issues that are essential to understanding broad areas of physical, chemical and biological science. Topics include key laser types - gas, solid state, and semiconductor - as well as the rapidly evolving field of ultrashort laser phenomena for femtochemistry applications. The examples used are well researched and clearly presented. Introduction to Laser Spectroscopy is strongly recommended to newcomers as well as researchers in physics, engineering, chemistry and biology. * A comprehensive course that combines theory and practice * Includes a systematic and comprehensive description for key laser types * Written for students and professionals looking to gain a thorough understanding of modern laser spectroscopy

Laser Spectroscopy

Author : Wolfgang Demtröder
ISBN : 9783662051559
Genre : Technology & Engineering
File Size : 24. 53 MB
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Keeping abreast of the latest techniques and applications, this new edition of the standard reference and graduate text on laser spectroscopy has been completely revised and expanded. While the general concept is unchanged, the new edition features a broad array of new material, e.g., frequency doubling in external cavities, reliable cw-parametric oscillators, tunable narrow-band UV sources, more sensitive detection techniques, tunable femtosecond and sub-femtosecond lasers (X-ray region and the attosecond range), control of atomic and molecular excitations, frequency combs able to synchronize independent femtosecond lasers, coherent matter waves, and still more applications in chemical analysis, medical diagnostics, and engineering.

Laser Spectroscopy And Photochemistry On Metal Surfaces

Author : Hai-Lung Dai
ISBN : 9810229976
Genre : Laser spectroscopy
File Size : 86. 74 MB
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Laser Spectroscopy

Author : Steven Chu
ISBN : 9810247818
Genre : Science
File Size : 24. 39 MB
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The XV International Conference on Laser Spectroscopy brought together spectroscopists from all over the world working in the very diverse and still growing field of laser spectroscopy. It addressed a large number of modern scientific issues at the highest level.

Femtosecond Laser Pulses

Author : Claude Rulliere
ISBN : 9780387266749
Genre : Technology & Engineering
File Size : 65. 66 MB
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This smooth introduction for advanced undergraduates starts with the fundamentals of lasers and pulsed optics. Thus prepared, the student is introduced to short and ultrashort laser pulses, and learns how to generate, manipulate, and measure them. Spectroscopic implications are also discussed. The second edition has been completely revised and includes two new chapters on some of the most promising and fast-developing applications in ultrafast phenomena: coherent control and attosecond pulses.

Femtosecond Laser Micromachining

Author : Roberto Osellame
ISBN : 9783642233661
Genre : Technology & Engineering
File Size : 43. 85 MB
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Femtosecond laser micromachining of transparent material is a powerful and versatile technology. In fact, it can be applied to several materials. It is a maskless technology that allows rapid device prototyping, has intrinsic three-dimensional capabilities and can produce both photonic and microfluidic devices. For these reasons it is ideally suited for the fabrication of complex microsystems with unprecedented functionalities. The book is mainly focused on micromachining of transparent materials which, due to the nonlinear absorption mechanism of ultrashort pulses, allows unique three-dimensional capabilities and can be exploited for the fabrication of complex microsystems with unprecedented functionalities.This book presents an overview of the state of the art of this rapidly emerging topic with contributions from leading experts in the field, ranging from principles of nonlinear material modification to fabrication techniques and applications to photonics and optofluidics.

Ultrafast Laser Spectroscopy In Complex Solid State Materials

Author :
ISBN : OCLC:1066664093
Genre :
File Size : 74. 27 MB
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This thesis summarizes my work on applying the ultrafast laser spectroscopy to the complex solid state materials. It shows that the ultrafast laser pulse can coherently control the material properties in the femtosecond time scale. And the ultrafast laser spectroscopy can be employed as a dynamical method for revealing the fundamental physical problems in the complex material systems.

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