Download or read book Thermally Induced Effects in Solid State Laser Rods written by Richard Lee Townsend (Jr.) and published by . This book was released on 1966 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment was performed to measure changes in optical length of ruby and neodymium in glass laser rods both during and after excitation by the pump flash. A Twyman-Green interferometer was used to produce fringes, the fringe movement being correlated with changes in optical length. Movement and distortion of fringes was observed using a multiframe image converter camera. The results show that all rods expand linearly with time during the time the pump is on and that all rods develop a distortion which is dependent on the radial energy density distribution within the rod. After the pump goes off, the rods being a relaxation back to the unexcited state. The relaxation is interrupted when hot air propagates from the flash tube to the rod causing the rod to reheat and causing an extremely concave appearance. The rods then relax slowly to an equilibrium state with ruby reaching this state in much shorter times (0.4 sec) than glass due to its higher thermal conductivity. These results stress the importance of uniform pumping if low beam divergence is to be achieved. Immersion of the rod in an index-matching infrared-absorbing fluid would be desirable not only to pump the laser uniformly but also to shield it from the infrared radiation which causes concave distortions after 20 msec. (Author).
Download or read book Thermally Induced Effects in Solid State Laser Rods written by Richard Lee Townsend (Jr.) and published by . This book was released on 1966 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment was performed to measure changes in optical length of ruby and neodymium in glass laser rods both during and after excitation by the pump flash. A Twyman-Green interferometer was used to produce fringes, the fringe movement being correlated with changes in optical length. Movement and distortion of fringes was observed using a multiframe image converter camera. The results show that all rods expand linearly with time during the time the pump is on and that all rods develop a distortion which is dependent on the radial energy density distribution within the rod. After the pump goes off, the rods being a relaxation back to the unexcited state. The relaxation is interrupted when hot air propagates from the flash tube to the rod causing the rod to reheat and causing an extremely concave appearance. The rods then relax slowly to an equilibrium state with ruby reaching this state in much shorter times (0.4 sec) than glass due to its higher thermal conductivity. These results stress the importance of uniform pumping if low beam divergence is to be achieved. Immersion of the rod in an index-matching infrared-absorbing fluid would be desirable not only to pump the laser uniformly but also to shield it from the infrared radiation which causes concave distortions after 20 msec. (Author)
Download or read book Research Review written by and published by . This book was released on 1966-08 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics and Engineering of Solid State Lasers written by Yehoshua Y. Kalisky and published by SPIE Press. This book was released on 2006 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains the mutual influences between the physical and dynamic processes in solids and their lasing properties. This book provides insight into the physics and engineering of solid state lasers by integrating information from several disciplines, including solid state physics, materials science, photophysics, and dynamic processes in solids.
Download or read book Research Review written by United States. Air Force. Office of Aerospace Research and published by . This book was released on 1965 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid State Laser Engineering written by Walter Koechner and published by Springer. This book was released on 2013-11-11 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written from an industrial perspective and provides a detailed discussion of solid-state lasers, their characteristics, design and construction. Emphasis is placed on engineering and practical considerations. The book is aimed mainly at the practicing scientist or engineer who is interested in the design or use of solid-state lasers, but the comprehensive treatment of the subject will make the work useful also to students of laser physics who seek to supplement their theoretical knowledge with engineering information. In order to present the subject as clearly as possible, phenomenological descriptions using models have been used rather than abstract mathematical descriptions. This results in a simplified presentation. The descriptions are enhanced by the inclusion of numerical and technical data, tables and graphs. This new edition has been updated and revised to take account of important new developments, concepts, and technologies that have emerged since the publication of the first and second editions.
Download or read book Handbook of Solid State Lasers written by Peter Cheo and published by CRC Press. This book was released on 1988-11-29 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information on both state-of-the-art technology and fundamental principles of fully developed solid-state lasers, emphasizing their operational characteristics and physical properties. Six contributions discuss theories and techniques of III-V semiconductor diode lasers, describe various ty
Download or read book Solar Pumped Lasers written by Dawei Liang and published by Springer Nature. This book was released on 2023-05-01 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is a comprehensive review of many different areas in solar-pumped lasers design and characterization. It enables readers to develop their skills in general solid-state laser design and solar collector design and provides numerous solved exercises at the end of each chapter to further this development. This book begins by introducing the brief history of solar-pumped laser and its potential applications. It explains the basic theories of imaging and non-imaging primary, secondary, and tertiary solar concentrators. It discusses solar-pumped solid-state laser theory and solar-to-laser power conversion efficiencies. There are chapters dedicated to ZEMAX and LASCAD numerical simulation tools, to help develop readers’ skills in innovative solid-state laser design. This book is one of the first books to relate concentrated solar energy technologies to solid-state laser technologies and is therefore of interest to students, academics, engineers, and laser and optical system designers.
Download or read book Lasers and Electro optics Research at the Cutting Edge written by Steven B. Larkin and published by Nova Publishers. This book was released on 2007 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is expected that ongoing advances in optics will revolutionise the 21st century as they began doing in the last quarter of the 20th. Such fields as communications, materials science, computing and medicine are leaping forward based on developments in optics. This series presents leading edge research on optics and lasers from researchers spanning the globe.
Download or read book Solid State Lasers written by Walter Koechner and published by Springer Science & Business Media. This book was released on 2006-05-29 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Koechner's well-known ‘bible’ on solid-state laser engineering is now available in an accessible format at the graduate level. Numerous exercises with hints for solution, new text and updated material where needed make this text very accessible.
Download or read book An Overview of Heat Transfer Phenomena written by Salim Newaz Kazi and published by BoD – Books on Demand. This book was released on 2012-10-31 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the wake of energy crisis due to rapid growth of industries, urbanization, transportation, and human habit, the efficient transfer of heat could play a vital role in energy saving. Industries, household requirements, offices, transportation are all dependent on heat exchanging equipment. Considering these, the present book has incorporated different sections related to general aspects of heat transfer phenomena, convective heat transfer mode, boiling and condensation, heat transfer to two phase flow and heat transfer augmentation by different means.
Download or read book Lasers and Masers written by and published by . This book was released on 1966 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lasers and Masers a Continuing Bibliography written by United States. National Aeronautics and Space Administration and published by . This book was released on 1965 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1966 with total page 1336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 8th Meeting on Optical Engineering in Israel written by Moshe Oron and published by . This book was released on 1993 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lasers and Current Optical Techniques in Biology written by Giuseppe Palumbo and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of innovative light sources, fibre laser sources and light emitting diodes, is opening unexpected perspectives into optical techniques and is promising new exciting applications in the field of biomedicine. Lasers and Current Optical Techniques in Biology aims to provide an overview of light sources, together with an extensive and authoritative description of the optical techniques in bio-medicine. This book is designed to give biomedical researchers a strong feel for the capability of physical approaches, promote new interdisciplinary interests and persuade more practitioners to take advantage of optical techniques. Current developments in a variety of optical techniques, including Near-Infra Red Spectroscopy, and traditional and advanced fluorescence techniques are covered, ranging from those that are becoming common practice to those that need much more experimentation before they can be accepted as real breakthroughs. Further topics include optical coherence tomography and its variations, polarised light imaging and, principle laser and lamp sources- a usually fragmentary topic, often dispersed among specialist publications. The wide range of topics covered make Lasers and Current Optical Techniques in Biology of interest to a diverse range of scientific communities.
Download or read book Thermal Effects in End heated Laser Rods written by Dana Christian Kopf and published by . This book was released on 1993 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unwanted heat generated in optically-pumped solid-state lasers causes thermal gradients, strain, and thermal expansion which in turn results in a nonuniform optical path difference (OPD) increase across the gain media. This ultimately results in poor beam quality. An interferometric based diagnostic for experimentally determining the time-dependent OPD change in an optically heated media was developed. This device is demonstrated by heating a glass (BK7) window with a CO sub 2 laser, effectively simulating high power end-pumping in a rod. Temporal OPD changes are measured by automated counting of interference fringes as they are generated by the thermal effects. A two-dimensional, time dependent model is developed to describe the radial temperature distribution in a cylinder, the stress and strain distributions, the thermal expansion, and the associated OPD change caused by a Gaussian heat source. This compared to the experimental data for the BK7 window to determine the validity of the approximations and its usefulness for other systems. Good agreement between the model and experiment, within 10 percent was observed.
