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＜p＞Over the past ten years, carbon dioxide laser surgery has made impressive strides and is now applied to every field of surgery without exception. It is the intention of this book to record the work done in this field in the Department of Plastic and Maxillofacial Surgery of the Beilinson Medical Center and Tel Aviv University Medical School, Israel, as well as that performed in association with other depart ments. In this context, one feels that it is incumbent upon one to acknowledge the cooperation of the medical and paramedical staff of the Department of Plastic and Maxillofacial Surgery of the Beilinson Medical Center, as well as that of Prof. Yehuda Shindel and Dr. Daniel Katenelson of the Department of Ear, Nose and Throat, Dr. Y ona Tadir of the Department of Obstetrics and Gynecology and Dr. Itamar Kott of the Department of General Surgery. I should like to make special mention of Dr. Ralph Ger of New York, who worked with me on the original clinical trials, and the engineer Uzi Sharon, who developed the Sharplan Laser with me. The progress of Laser Surgery is well demonstrated by the participation in the four meetings of the International Society for Laser Surgery, the first of which was held in Tel Aviv in 1975 with an attendance of 65 and the last in Tokyo in 1981 with an attendance of 1200.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞Since the development of the first laser generator by Maiman in 1960, laser energy has gained increased interest and has subsequently been used in various fields of applica tion. Due to its high energy density, combined with a sharply defined irradiation field, laser has aroused great expectations, especially since laser beams have been used very successfully in various fields especially technology and medicine. Medical and surgical applications of the laser were among the first and have been of undisputed benefit in, for example, ophthalmologic interventions such as coagulation of the retina, or for endoscopic tumorectomy in the bronchial, gastrointestinal and urogenital tracts. Consequently, considerable research effort was made to also apply laser techniques in interventional cardiology for the treatment of atherosclerosis, aimed at removing plaque material from stenosed tissue or occluded ateries and recanalizing tough and calcified segments unsuitable for the well-extablished technique of balloon dilatation. Ablating atheroma rather than pushing it aside was thought to achieve better results. However, it was found that the laser may create rough-edged cuts partly with substantial thermal or mechanical damage to the surrounding tissue, consequently provoking preconditions for unwanted restenosis. Different types of laser generators and probes have therefore been investigated in arterial vessels, mostly focusing on indirect laser effects. Intravasal probes with laser heated metal tips were used, as well as balloon catheters with an incorporated laser fiber designed to heat the surrounding tissue outside the balloon and to, ineffect, "iron out the plaque".＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞Disorder is everywhere, inherently present in nature, and is commonly believed to be a synonymous with disturbance. As a consequence, the methodical and customary study of the dynamics of the electromagnetic field, both in the linear and nonlinear optical regimes, leans to rule out it from the treatment.＜br /＞ On the other hand, nonlinearity enriches the physical disciplines and brings them closer to reality with respect to the linear approximation. Nonlinearity allows to stimulate a wide and rich ensemble of optical responses that beautifies the role of matter in the active processes with electromagnetic fields.＜br /＞ Independently of each other, both of these mechanisms foster localization of light. What happens when light enlightens their synergistic interaction?＜br /＞ When pushed together, light, disorder and nonlinearity make new and intriguing phenomena emerge. This text provides a comprehensive investigation of the role of disorder in the nonlinear optical propagation both in transparent media and lasers. Eventually, disorder promotes and enhances complex nonlinear dynamics opening new perspectives in applied research driven by the processes of localization of the electromagnetic field. The first experimental study of laser emission in granular media unveils how randomness magnifies and largely affect laser-matter interactions.＜br /＞ Viola Folli in her research work touches and deepens the leading milestones of the new science named Complex Photonics.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞The purpose of this symposium on light-coagulation is not to show the superi ority of the argon-laser-coagulation or, on the contrary, of the classical photo coagulation, but rather to see, if possible, which are the respective indications and contraindications for xenon-are-coagulation as well as for argon-laser coagulation. So, for instance, the argon-Iaser-coagulator is perhaps more appropriate to treat the lesions at and around the macula and the optic disc, but for the peripheral lesions of the retina the xenon-arc photocoagulator is surely as effective. For the conservative treatment of intraocular tumours, the xenon arc-coagula tor is beyond doubt more efficacious than the argon-Iaser-coagu lator. We were very happy to have at this symposium Professor MEYER-SCHWICKE RATH, the creator and the pioneer of light-coagulation, his coworker, Professor WESSING, and Doctor HUNTER LITTLE, one of the pioneers of the laser-therapy. We thank them very warmly for having brought to us the results of their promi nent clinical experiments. After general considerations on laser-photocoagulation, we will have a discussion on macular alterations and their treatment as well as on peripheral retinal vascular or non vascular diseases. The most important part concerns the treatment of diabetic retinopathy. Finally the prevention of complications in argon laser retinal photocoagulation will be reviewed.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞The book addresses various approaches to television projection imaging on large screens using lasers. Results of theoretical and experimental studies of an acousto-optic projection system operating on the principle of projecting an image of an entire amplitude-modulated television line in a single laser pulse are presented. Characteristic features of image formation and requirements for individual components are discussed. Particular attention is paid to nonlinear distortions of the image signal, which show up most severely at low modulation signal frequencies. The feasibility of improving the process efficiency and image quality using acousto-optic modulators and pulsed lasers is studied.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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＜p＞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.＜/p＞ ＜p＞Key Features:＜/p＞ ＜p＞? Offers a complete update of the original, bestselling work, including many brand-new chapters.＜/p＞ ＜p＞? 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.＜/p＞ ＜p＞? 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.＜/p＞ ＜p＞? 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.＜/p＞ ＜p＞? Adds new sections on laser materials processing, laser spectroscopy, lasers in imaging, lasers in environmental sciences, and lasers in communications.＜/p＞ ＜p＞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.＜/p＞画面が切り替わりますので、しばらくお待ち下さい。
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