Nonlinear Phenomena Induced by Millijoule Femtosecond Laser Pulses at an Air-water Interface PDF Download
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Author: Benjamin David Strycker Publisher: ISBN: Category : Languages : en Pages :
Book Description
Femtosecond laser pulses with millijoule energy have the potential to be used in many applications for remote sensing in marine environments. In this dissertation, we investigate some of the basic phenomena involved when a loosely focused, potentially filament-forming millijoule femtosecond laser pulse propagating in air interacts with an air-water interface. As an introduction to the primary investigation, we discuss concepts and experiments relevant to the primary investigation: the interaction of millijoule femtosecond laser pulses with an air-water interface. We first discuss linear femtosecond pulse propagation in water and describe an experiment investigating pulse attenuation behavior in water in the linear pulse propagation regime. We find no deviations from exponential attenuation, in contradiction to some earlier works. We then discuss nonlinear pulse propagation in water and describe an experiment investigating the onset of nonlinear pulse propagation and spectral transformation in water. We find that nonlinear femtosecond pulse propagation begins at a peak pulse intensity of about 1010 W/cm2. This experiment provides a convenient segway into the discussion and investigation of femtosecond laser filaments. We describe an experiment in which two filaments interact within liquid methanol and exchange energy. We then discuss laser-induced breakdown spectroscopy and demonstrate that different LIBS signal intensity thresholds can be utilized to image shallowly buried objects. Finally, all of these concepts are brought together to discuss the interaction of millijoule femtosecond laser pulses with an air-water interface. We catalogue and describe the main phenomena involved, which span about 12 orders of magnitude in time. We then describe the characteristics of the acoustic shockwaves generated by this interaction and demonstrate the usefulness of millijoule femtosecond laser pulses in several remote sensing applications in marine environments. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151778
Author: Benjamin David Strycker Publisher: ISBN: Category : Languages : en Pages :
Book Description
Femtosecond laser pulses with millijoule energy have the potential to be used in many applications for remote sensing in marine environments. In this dissertation, we investigate some of the basic phenomena involved when a loosely focused, potentially filament-forming millijoule femtosecond laser pulse propagating in air interacts with an air-water interface. As an introduction to the primary investigation, we discuss concepts and experiments relevant to the primary investigation: the interaction of millijoule femtosecond laser pulses with an air-water interface. We first discuss linear femtosecond pulse propagation in water and describe an experiment investigating pulse attenuation behavior in water in the linear pulse propagation regime. We find no deviations from exponential attenuation, in contradiction to some earlier works. We then discuss nonlinear pulse propagation in water and describe an experiment investigating the onset of nonlinear pulse propagation and spectral transformation in water. We find that nonlinear femtosecond pulse propagation begins at a peak pulse intensity of about 1010 W/cm2. This experiment provides a convenient segway into the discussion and investigation of femtosecond laser filaments. We describe an experiment in which two filaments interact within liquid methanol and exchange energy. We then discuss laser-induced breakdown spectroscopy and demonstrate that different LIBS signal intensity thresholds can be utilized to image shallowly buried objects. Finally, all of these concepts are brought together to discuss the interaction of millijoule femtosecond laser pulses with an air-water interface. We catalogue and describe the main phenomena involved, which span about 12 orders of magnitude in time. We then describe the characteristics of the acoustic shockwaves generated by this interaction and demonstrate the usefulness of millijoule femtosecond laser pulses in several remote sensing applications in marine environments. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151778
Author: See Leang Chin Publisher: Springer Science & Business Media ISBN: 1441906886 Category : Science Languages : en Pages : 138
Book Description
This book attempts to give a discussion of the physics and current and potential applications of the self-focusing of an intense femtosecond laser pulse in a tra- parent medium. Although self-focusing is an old subject of nonlinear optics, the consequence of self-focusing of intense femtosecond laser pulses is totally new and unexpected. Thus, new phenomena are observed, such as long range lam- tation, intensity clamping, white light laser pulse, self-spatial ltering, self-group phase locking, self-pulse compression, clean nonlinear uorescence, and so on. Long range propagation at high intensity, which is seemingly against the law of diffraction, is probably one of the most exciting consequences of this new sub- eld of nonlinear optics. Because the intensity inside the lament core is high, new ways of doing nonlinear optics inside the lament become possible. We call this lamentation nonlinear optics. We shall describe the generation of pulses at other wavelengths in the visible and ultraviolet (UV) starting from the near infrared pump pulse at 800 nm through four-wave-mixing and third harmonic generation, all in gases. Remotely sensing uorescence from the fragments of chemical and biological agents in all forms, gaseous, aerosol or solid, inside the laments in air is demonstrated in the labo- tory. The results will be shown in the last part of the book. Through analyzing the uorescence of gas molecules inside the lament, an unexpected physical process pertaining to the interaction of synchrotron radiation with molecules is observed.
Author: Roberto Osellame Publisher: Springer Science & Business Media ISBN: 364223366X Category : Science Languages : en Pages : 485
Book Description
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.
Author: Frank Träger Publisher: Springer Science & Business Media ISBN: 3642194095 Category : Science Languages : en Pages : 1704
Book Description
This new edition features numerous updates and additions. Especially 4 new chapters on Fiber Optics, Integrated Optics, Frequency Combs and Interferometry reflect the changes since the first edition. In addition, major complete updates for the chapters: Optical Materials and Their Properties, Optical Detectors, Nanooptics, and Optics far Beyond the Diffraction Limit. Features Contains over 1000 two-color illustrations. Includes over 120 comprehensive tables with properties of optical materials and light sources. Emphasizes physical concepts over extensive mathematical derivations. Chapters with summaries, detailed index Delivers a wealth of up-to-date references.
Author: KOJI SUGIOKA. Publisher: ISBN: 9783319695372 Category : Lasers in engineering Languages : en Pages :
Book Description
This handbook provides a comprehensive review of the entire field of laser micro and nano processing, including not only a detailed introduction to individual laser processing techniques but also the fundamentals of laser-matter interaction and lasers, optics, equipment, diagnostics, as well as monitoring and measurement techniques for laser processing. Consisting of 11 sections, each composed of 4 to 6 chapters written by leading experts in the relevant field. Each main part of the handbook is supervised by its own part editor(s) so that high-quality content as well as completeness are assured. The book provides essential scientific and technical information to researchers and engineers already working in the field as well as students and young scientists planning to work in the area in the future. Lasers found application in materials processing practically since their invention in 1960, and are currently used widely in manufacturing. The main driving force behind this fact is that the lasers can provide unique solutions in material processing with high quality, high efficiency, high flexibility, high resolution, versatility and low environmental load. Macro-processing based on thermal process using infrared lasers such as CO2 lasers has been the mainstream in the early stages, while research and development of micro- and nano-processing are becoming increasingly more active as short wavelength and/or short pulse width lasers have been developed. In particular, recent advances in ultrafast lasers have opened up a new avenue to laser material processing due to the capabilities of ultrahigh precision micro- and nanofabrication of diverse materials. This handbook is the first book covering the basics, the state-of-the-art and important applications of the dynamic and rapidly expanding discipline of laser micro- and nanoengineering. This comprehensive source makes readers familiar with a broad spectrum of approaches to solve all relevant problems in science and technology. This handbook is the ultimate desk reference for all people working in the field.
Author: Dongfang Yang Publisher: BoD – Books on Demand ISBN: 9535128116 Category : Technology & Engineering Languages : en Pages : 430
Book Description
Laser ablation refers to the phenomenon in which a low wavelength and short pulse (ns-fs) duration of laser beam irradiates the surface of a target to induce instant local vaporization of the target material generating a plasma plume consisting of photons, electrons, ions, atoms, molecules, clusters, and liquid or solid particles. This book covers various aspects of using laser ablation phenomenon for material processing including laser ablation applied for the deposition of thin films, for the synthesis of nanomaterials, and for the chemical compositional analysis and surface modification of materials. Through the 18 chapters written by experts from international scientific community, the reader will have access to the most recent research and development findings on laser ablation through original research studies and literature reviews.
Author: Paul Gibbon Publisher: World Scientific ISBN: 1911298844 Category : Science Languages : en Pages : 328
Book Description
This book represents the first comprehensive treatment of the subject, covering the theoretical principles, present experimental status and important applications of short-pulse laser-matter interactions.Femtosecond lasers have undergone dramatic technological advances over the last fifteen years, generating a whole host of new research activities under the theme of “ultrafast science”. The focused light from these devices is so intense that ordinary matter is torn apart within a few laser cycles. This book takes a close-up look at the exotic physical phenomena which arise as a result of this new form of “light-matter” interaction, covering a diverse set of topics including multiphoton ionization, rapid heatwaves, fast particle generation and relativistic self-channeling. These processes are central to a number of exciting new applications in other fields, such as microholography, optical particle accelerators and photonuclear physics.Repository for numerical models described in Chapter 6 can be found at www.fz-juelich.de/zam/cams/plasma/SPLIM/./a
Author: Eugene G. Gamaly Publisher: CRC Press ISBN: 9814241814 Category : Science Languages : en Pages : 370
Book Description
This is the first comprehensive treatment of the interaction of femtosecond laser pulses with solids at nonrelativistic intensity. It connects phenomena from the subtle atomic motion on the nanoscale to the generation of extreme pressure and temperature in the interaction zone confined inside a solid. The femtosecond laser-matter interaction has already found numerous applications in industry, medicine, and materials science. However, there is no consensus on the interpretation of related phenomena. With mathematics kept to a minimum, this is a highly engaging and readable treatment for students and researchers in science and engineering. The book avoids complex mathematical formulae, and hence the content is accessible to nontechnical readers. Useful summaries after each chapter provide compressed information for quick estimates of major parameters in planned or performed experiments. The book connects the basic physics of femtosecond laser-solid interactions to a broad range of applications. Throught the text, basic assumptions are derived from the first principles, and new results and ideas are presented. From such analyses, a qualitative and predictive framework for the field emerges, the impact of which on applications is also discussed.
Author: Benjamin David Strycker
Author: Benjamin David Strycker
Author: See Leang Chin
Author: Martin Centurion
Author: Roberto Osellame
Author: Frank Träger
Author: 
Author: KOJI SUGIOKA.
Author: Dongfang Yang
Author: Paul Gibbon
Author: Eugene G. Gamaly