Reinhart Poprawe – författare

This book summarizes a five year research project, as well as subsequent results regarding high power diode laser systems and their application in materials processing. The text explores the entire chain of technology, from the semiconductor technology, through cooling mounting and assembly, beam shaping and system technology, to applications in the processing of such materials as metals and polymers. Includes theoretical models, a range of important parameters and practical tips.

This book summarizes a five year research project, as well as subsequent results regarding high power diode laser systems and their application in materials processing. The text explores the entire chain of technology, from the semiconductor technology, through cooling mounting and assembly, beam shaping and system technology, to applications in the processing of such materials as metals and polymers. Includes theoretical models, a range of important parameters and practical tips.

This book covers the application technology of lasers, focusing more on the vast range of processes than on individual applications, in order to motivate and enable future innovations.

This book covers the application technology of lasers, focusing more on the vast range of processes than on individual applications, in order to motivate and enable future innovations.

Es gibt viele Bücher über Lasertechnik. Schwerpunktmäßig behandeln sie die Physik des Lasers und haben zum Ziel, Grundlagen zu vermitteln und Theorien zur Beschreibung von Entstehung und Ausbreitung von Laserstrahlung zu dokumentieren. Das vorliegende Buch bezieht sich auf die Anwendung von Lasertechnik. Auch dies ist ein sehr breites Thema, das nicht erschöpfend in einem Werk zusammengefasst sein kann. Aus diesem Grund wird hier der Fokus auf Anwendungen in der Fertigungstechnik gelegt. Dies betrifft insbesondere Bearbeitungsverfahren, wie sie in der heutigen Produktionstechnik eingesetzt werden können. Das Buch ist in zwei Teile gegliedert. Für den interessierten Fachmann, der ingenieurswissenschaftlich oder physikalisch vorgebildet ist, sind die wesentlichen Phänomene, die bei der Werkstoffbearbeitung mit Laserstrahlung auftreten, formelmäßig quantifiziert und in entsprechenden Modellen beschrieben. Diese Grundlagen ermöglichen eine systematische Einordnung der unterschiedlichen Bearbeitungsverfahren und stellen immer wieder die Möglichkeit dar, die verschiedenen Anwendungen auf eine einheitliche wissenschaftliche Basis abzubilden.Von praxisbezogener Bedeutung sind die dann in den verschiedenen Kapiteln zu Bearbeitungsverfahren beschriebenen Prozesse, die auf leicht verständlichem Niveau die Grundprinzipien und wesentlichen quantitativen Zusammenhänge von Prozessparametern erläutern. Jeweils angeführt sind zahlreiche Beispiele, die die Phantasie des Lesers anregen und zu neuen Anwendungsideen verhelfen sollen. Das Alleinstellungsmerkmal dieses Buches ist daher die Dokumentation einer Vielzahl von Anwendungsmöglichkeiten und Perspektiven der Lasertechnik in der Fertigung in direkter Abbildung auf systematisch aufgezeigte physikalische und technische Grundlagen. Auf diese Weise soll ein individueller Tiefgang des Lesers im Prozessverständnis für die jeweils interessierende Anwendung ermöglicht werden.

The Laser world consists basically of two areas, which are necessary and in many cases also sufficient for effective innovation: The right laser for the right application.

The three volumes VIII/1A, B, C document the state of the art of “Laser Physics and Applications”. Scientific trends and related technological aspects are considered by compiling results and conclusions from phenomenology, observation and experiments. Reliable data, physical fundamentals and detailed references are presented.In the recent decades the laser source matured to an universal tool common to scientific research as well as to industrial use. Today the main technical goal is the generation of optical power towards shorter wavelengths, shorter pulses, higher efficiency and higher power for applications in science and industry. Tailoring the optical energy in wavelength, space and time is a requirement for the investigation of laser-induced processes, i.e. excitation, non-linear amplification, storage of optical energy, etc. According to the actual trends in laser research and development, Vol. VIII/1 is split into three parts: Vol. VIII/1A with its two subvolumes 1A1 and 1A2 covers laser fundamentals, Vol. VIII/1B with its three subvolumes 1B1, 1B2 and 1B3 deals with laser systems and Vol. VIII/1C gives an overview on laser applications.

Discoveries and inventions periodically cause new technological developments within human societies. Key inventions and their accompanying economic and social changes can be seen as the main promoters of technological and structural progress. Many examples of change can be traced back to key inventions. At the end of the last century, one of the major lines of technological development was the implementation of electricity, the introduction of electric current. Inno­ vations were generated both by applying the "low quality" thermal and energy transmission properties, as well as by studying "high quality" characteristics like signal processing and electromagnetic wave propagation. In the field of signal processing, particular devices like the thermionic valve, the transistor and the (micro) chip deserve mention. Regarding energy generation, distribution and consumption, huge investments were made in coal and nuclear power plants, as well as in consumer and industrial electric appliances. Which innovations can be expected to improve or replace some of the applications (products, processes) of electricity? Thinking of an important technology invented about three decades ago - the laser - coherent light plays the key role in the process ("light amplification by stimulated emission of radiation"). Thus the new term technologies of light can be used for such innovations. Extending the definition, "technologies of light" or "photonics" can be defined as any methods, processes or products which make use of the spectrum of light, and any systems whose function is to study, measure, transform or transmit by means of light.

The present book covers the application technology of lasers, focusing more on the vast range of processes than on individual applications, in order to motivate and enable future innovations.