Download or read book Tunable Infrared Generation Using Parametric and Raman Processes written by Stephen John Brosnan and published by . This book was released on 1979 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Infrared Generation written by Y.R. Shen and published by Springer Science & Business Media. This book was released on 2005-08-01 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Download or read book Generation of Tunable Infrared Radiation by Stimulated Electronic Raman Scattering written by R. Wyatt and published by . This book was released on 1976 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parametric Infrared Generation written by Vincent Kemlin and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation deals with the generation of parametric light in the range 1 to 12 μm. Parametric infrared generation turns out to be a challenge at the interface between the fields of nonlinear optics and materials science embodied by the two approaches used to achieve efficient frequency conversion. Birefringent Phase-Matching (BPM) in anisotropic materials has been the traditional solution used in most frequency converter devices. But since the 90's, the quick success of microstructured materials has paved the way for Quasi-Phase-Matching (QPM) even in isotropic materials, leading to a renewed interest in Optical Parametric Oscillators (OPO). The high degree of engineering offered by this technology is now widely recognized as a key competitive advantage. We obtained original results concerning parametric infrared generation using BPM as well as QPM.We have built the first OPO pumped by a 1.064 μm Nd:YAG laser and based on a 5-mm-thick crystal of 5%MgO:PPLN cut as a partial cylinder. This OPO combines a wide and continuous tunability over the range 1.4 μm - 4.4 μm with a good conversion efficiency, up to 30%. Despite the need to resort to pump intensities almost an order of magnitude higher than in a slab OPO, we have shown that the energetical performance of a partial cylinder OPO is now equivalent to that of a slab OPO besides a wider tunability that can be continuously addressed. When the same Nd:YAG laser pumps two such independent OPOs in parallel, we dispose of a highly versatile QPM dual wavelength source with two widely and independently tunable beams. We have built this unique source allowing versatile Difference Frequency Generation (DFG) towards the mid- and far- infrared. We carried out the first BPM DFG experiments with this source in a CdSe slab oriented for angular noncritical phase-matching at two different pump wavelengths, respectively 2.72 μm and 2.79 μm. The second set of DFG experiments were performed in a CdSe crystal cut and polished as a 5-mm-diameter full cylinder. Using a pump wavelength of 2.79 μm, we were able to tune the DFG wavelength from 8.3 μm up to 10.3 μm by rotating the crystal over an angular range of 18°. Contrary to all the BPM DFG experiments reported so far in the single crystal CdSe, tuning was achieved while keeping normal incidence of both the incident and generated beams in the crystal. The implementation of spectral narrowing techniques is already anticipated and will contribute to more accurate measurements of the phase-matching directions of a crystal as well as to a higher DFG conversion efficiency.These experiments with our dual wavelength source are preliminary and encouraging validations of our capability of performing DFG in small crystals and at any pump wavelength between 1.4 μm and 3.5 μm. Even though we investigated the promises held by CdSiP2 when it is only pumped with a Nd:YAG laser at 1.064 μm, there is tremendous prospect in terms of tunable infrared generation between 3.5 μm and 8 μm when this crystal is pumped around 2.4 μm. Such early demonstrations will be highly valuable for future applications requiring compact and tunable sources spanning the infrared spectrum. From a more fundamental point of view, performing DFG experiments at different pump wavelengths in the mid-infrared can lead to a highly accurate determination of the values of the refractive indices of a nonlinear crystal. In this dissertation, we have cast the first stone of a method that leads to the determination of the values of the refractive indices of a nonlinear crystal in the mid- to far- infrared. This new method is based on the unique measurements of the DFG phase-matching angles in spheres or cylinders, and should contribute to further advances in the field of phase-matching metrology.
Download or read book Optical Parametric Generation and Amplification written by Jing-Yuan Zhang and published by Routledge. This book was released on 2019-01-22 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume considers optical parametric generation and amplification (OPG/OPA), as a means for producing a tunable optical parametric device. It reviews the OPA/OPG systems using various crystals pumped by lasers at various frequencies with pulse duration ranging from picoseconds to femtoseconds. Part two covers the theoretical background for design of an OPA/OPG system, using two newly discovered nonlinear crystals. Experimental design considerations are discussed in section three, including the section of nonlinear crystals, pumping sources and optical configurations. In section four, the experimental results obtained are compared with the theoretical calculations.
Download or read book Generation of tunable infrared radiation by stimilated electronic Raman scattering written by Richard Wyatt and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Infrared Generation written by Roshan Lal Aggarwal and published by Springer. This book was released on 1977 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tunable Lasers written by Jonathan C. White and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the invention of the laser itself, the spectroscopist has dreamed of lasers that could be tuned continuously over whatever set of resonances he wished to study. Two developments of the mid-1960s - the optical paramet ric oscillator and the dye laser - were the first to begin to fulfill that dream. The cw dye laser, with its ability to produce extremely narrow linewidths, was particularly successful and revitalized the study of atomic physics. Other, complementary developments soon followed. These included the excimer, color center, and high pressure gas lasers, as well as Raman shifting and four wave mixing techniques for further extending the tuning ranges of such primary tunable laser sources. By the end of the 1970s, continuously or quasi-continuously tunable coherent sources were thus available for the visible and the near infrared, and a good part of the ultraviolet and the far infrared. Despite the existence of a number of excellent treatises on individual tech nologies, to the best of our knowledge, no one has yet attempted to survey the entire field of tunable lasers in a single volume. The purpose of this book is to fill that void. It is particularly aimed at those who are not necessarily laser ex perts, but who may wish to discover quickly and with a minimum of effort the best technology to satisfy a particular problem, and what the possibilities and limitations of that technology are.
Download or read book Laser Spectroscopy IV written by H. Walther and published by Springer. This book was released on 2013-06-05 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fourth International Conference on Laser Spectroscopy (FICOLS) was held in the Hotel Oberfahrt in Rottach-Egern, Tegernsee, June 11-15, 1979. Rottach-Egern is a well-known health resort situated on the southern end of Lake Tegernsee. As with the previous laser spectroscopy conferences in Vail, Megeve, and Jackson, the purpose of FICOLS was to provide ~n informal setting where an international group of scientists active in laser spectroscopy could discuss current problems and developments in the field. The program consisted essen tially of invited lectures with appropriate time provided for the latest postdeadline results. The conference was attended by 340 scientists representing 25 countries: Austria, Australia, Brazil, Canada,- Peoples Re public of China, Denmark, Finland, France, Germany (FRG), Germany (GDR), Great Britain, India, Italy, Japan, Nether lands, New Zealand, Norway, Pakistan, Poland, Spain, Sweden, Switzerland, U.S.k,, U.S.S.R., and Yugoslavia. Unfortunately five of our colleagues from Japan who planned to attend the meeting could not come due to an interruption of airline schedules, Their absence was a distinct loss to the conference. However, their papers will be published in one of the forthcoming issues of the journal Applied Physics. Numerous people have contributed to making the conference a success. Especially we would like to thank the members of the steering committee for their advice concerning the program.
Download or read book Encyclopedia of Optical Engineering Pho Z pages 2049 3050 written by Ronald G. Driggers and published by CRC Press. This book was released on 2003 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiled by 330 of the most widely respected names in the electro-optical sciences, the Encyclopedia is destined to serve as the premiere guide in the field with nearly 2000 figures, 560 photographs, 260 tables, and 3800 equations. From astronomy to x-ray optics, this reference contains more than 230 vivid entries examining the most intriguing technological advances and perspectives from distinguished professionals around the globe. The contributors have selected topics of utmost importance in areas including digital image enhancement, biological modeling, biomedical spectroscopy, and ocean optics, providing thorough coverage of recent applications in this continually expanding field.
Download or read book Stimulated Raman Scattering Microscopy written by Ji-Xin Cheng and published by Elsevier. This book was released on 2021-12-04 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stimulated Raman Scattering Microscopy: Techniques and Applications describes innovations in instrumentation, data science, chemical probe development, and various applications enabled by a state-of-the-art stimulated Raman scattering (SRS) microscope. Beginning by introducing the history of SRS, this book is composed of seven parts in depth including instrumentation strategies that have pushed the physical limits of SRS microscopy, vibrational probes (which increased the SRS imaging functionality), data science methods, and recent efforts in miniaturization. This rapidly growing field needs a comprehensive resource that brings together the current knowledge on the topic, and this book does just that. Researchers who need to know the requirements for all aspects of the instrumentation as well as the requirements of different imaging applications (such as different types of biological tissue) will benefit enormously from the examples of successful demonstrations of SRS imaging in the book. Led by Editor-in-Chief Ji-Xin Cheng, a pioneer in coherent Raman scattering microscopy, the editorial team has brought together various experts on each aspect of SRS imaging from around the world to provide an authoritative guide to this increasingly important imaging technique. This book is a comprehensive reference for researchers, faculty, postdoctoral researchers, and engineers. Includes every aspect from theoretic reviews of SRS spectroscopy to innovations in instrumentation and current applications of SRS microscopy Provides copious visual elements that illustrate key information, such as SRS images of various biological samples and instrument diagrams and schematics Edited by leading experts of SRS microscopy, with each chapter written by experts in their given topics
Download or read book Tunable Femtosecond Pulse Generation and Applications in Raman Micro spectroscopy written by Jiahui Peng and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to perceive the dynamics of nature is ultimately limited by the temporal resolution of the instruments available. With the help of the ultrashort optical pulse, people now are able to observe and steer the electronic dynamics on the atomic scale. Meanwhile, high power attainable in such short time scale helps to boost the study of nonlinear physics. Most commercial femtosecond lasers are based on Ti:sapphire, but such systems can only be tuned in a spectral range around 800 nm. Few applications need only a single wavelength in this spectral region and pulses tunable from the UV to the IR are highly desirable. Based on the soliton characteristics of ultrashort laser pulses, we are the first ones who propose to make use of resonant dispersive waves, which are phase-matched non-solitonic linear waves, to extend the spectral tuning range of ultrashort laser without involving complicated amplifiers. Experimentally, we achieve the tuning of dispersive wave wavelengths by changing the dispersion parameters of the laser cavity, and confirm dispersive waves are ultrashort pulses under appropriate conditions. We successfully apply such a system into a multi-wavelength operation Ti:sapphire laser. The proposed idea is general, and can be applied to systems where solitons dominate, for example fiber lasers. Thanks to the newly developed novel fiber -photonic crystal fiber- we obtain widely tunable and gap-free femtosecond pulse by extending this mechanism to waveguides. This is the largest reported tuning range for efficient nonlinear optical frequency conversion obtained with such a simple and low energy laser. We apply such a Ti:sapphire laser to Raman micro-spectroscopy. Because of the different temporal behaviors of the Raman process and other parametric processes, we can efficiently separate the coherent Raman signal from the unwanted background, and obtain a high chemical contrast and high resolution image. This high repetition rate and low energy laser oscillator makes it very suitable for biological Raman micro-spectroscopy, especially living samples for which damage is a big concern.
Download or read book Widely Tunable Coherent Spectrometer and Applications to Active Spectroscopy written by Stanford University. Ginzton Laboratory and published by . This book was released on 1977 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trends in Colloid and Interface Science XXIII written by Seyda Bucak and published by Springer Science & Business Media. This book was released on 2010-08-27 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes 11 contributions to the 23rd Conference of the European Colloid and Interface Society which took in Antalya, Turkey between September 6th and 11th, 2009. The contributions from leading scientists cover a broad spectrum of topics concerning• Self Assembly• Interfacial Phenomena• Colloidal Dispersions and Colloidal Stability• Polymer Solution, Gels and Phase Behaviour• Nanostructured Materials• Biomaterials and Medical AspectsDue to the increasing significance of Colloid and Interface Science for both scientific and technical applications where scientific principles also contribute to new technologies in fast improving Nanotechnology and Medical Science, this book will be an essential source of information with respect to recent developments and results related to this field.
Download or read book Concise Encyclopedia of Semiconducting Materials Related Technologies written by S. Mahajan and published by Elsevier. This book was released on 2013-10-22 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of electronic materials and particularly advances in semiconductor technology have played a central role in the electronics revolution by allowing the production of increasingly cheap and powerful computing equipment and advanced telecommunications devices. This Concise Encyclopedia, which incorporates relevant articles from the acclaimed Encyclopedia of Materials Science and Engineering as well as newly commissioned articles, emphasizes the materials aspects of semiconductors and the technologies important in solid-state electronics. Growth of bulk crystals and epitaxial layers are discussed in the volume and coverage is included of defects and their effects on device behavior. Metallization and passivation issues are also covered. Over 100 alphabetically arranged articles, written by world experts in the field, are each intended to serve as the first source of information on a particular aspect of electronic materials. The volume is extensively illustrated with photographs, diagrams and tables. A bibliography is provided at the end of each article to guide the reader to recent literature. A comprehensive system of cross-references, a three-level subject index and an alphabetical list of articles are included to aid readers in the abstraction of information.
Download or read book Molecular and Laser Spectroscopy written by V.P. Gupta and published by Elsevier. This book was released on 2022-08-21 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular and Laser Spectroscopy, Advances and Applications: Volume 3 gives students and researchers an up-to-date understanding of the fast-developing area of molecular and laser spectroscopy. This book covers basic principles and advances in several conventional as well as new and upcoming areas of molecular and laser spectroscopy. This third volume is an extension of the two previous volumes of the same title and includes all-new topics. Each chapter is devoted to a particular fast-growing area of research and fills the gap between elementary texts and advanced material found in research articles. Some of the topics covered include: terahertz spectroscopy and its applications in health care· linear and non-linear vibrational optical activity spectroscopy; cascade laser IR-spectroscopy and frequency comb techniques; step-scan infrared spectroscopy (absorption and emission) for detecting reaction intermediates· surface-enhanced (SERS) and tip-enhanced (TERS) Raman scattering; infrared and Raman micro-spectroscopy; time-resolved linear and non-linear infrared spectroscopy using pico-second and femtosecond lasers. The spectroscopic techniques have been applied to medical sciences, forensics, security, material science, agriculture, food, chemical, pharmaceutical and petrochemical industries and used to study molecular vibrational dynamics, and hydrogen bonding in ground and excited states. This book serves as a valuable resource for students, teachers, and beginning researchers engaged in the area of molecular and laser spectroscopy. On account of the wide range of applications, researchers and scientific personnel in many industries will find this book useful for learning about the latest techniques and putting them to practical use. Written by eminent research scientists having an intricate knowledge of the latest activities in the field Includes exhaustive lists of research articles, reviews, and books at the end of each chapter to aid in further pursuit of research activity Uses illustrative examples of the varied applications to provide a practical guide to those interested in using molecular and laser spectroscopy tools in their research Each chapter is written in simple, clear language and develops its topic systematically, from basics to the latest developments and future projections
