Download or read book The High Power Iodine Laser written by G. Brederlow and published by Springer. This book was released on 2013-04-17 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been two major review articles on the iodine laser in the last ll seven years, liThe Photochemical Iodine Laser by K. Hohla and K. Kompa (Handbook of Chemical Lasers, edited by R. Gross and J. Bott, Wi 1 ey, New York,1976) and a SANDIA report (No. 78-1071, 1978) entitled liThe Atomic Iodine Laserll. Since then, a large body of new material has been published, and practical experience has been gained with large iodine laser systems in Garchi ng (ASTERIX II I) and in the USSR. These 1 asers have now become very reliable tools, especially in fusion-oriented plasma experiments, which represent their main field of application. They can deliver powers in excess of many terawatts per beam and are thus also suited for use in other areas such as X-ray lasers, incoherent X-ray sources, compression of matter and its behaviour at very high densities. The physics of the iodine laser is now rather well understood, and its technology has reached a standard adequate for the construction of large scale systems in the multi-hundred kJ range. In view of this new situation, we thought it useful to document the present state of the art ina book. Its contents and the literature cited therein have been chosen to cover those areas which are of main concern in the design and operation of pulsed high-power iodine lasers.
Download or read book PROSPECTS OF THE HIGH POWER TODINE LASER written by K. Hohla and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pulsed High Power Iodine Laser at IPP written by G. Brederlow and published by . This book was released on 1974 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prospects of the high power iodine laser written by and published by . This book was released on 1976 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New All Gas Phase Chemical Iodine Laser Scientists Developed and Demonstrated a New Chemically Pumped Laser written by and published by . This book was released on 2002 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid-state lasers convert electrical energy into light using optical excitation. Although efficient, scientists continue research into scaling these devices for high-power applications. Chemical lasers efficiently convert energy derived from chemical bonds and reactions into laser photons. Scientists use chemical lasers for applications that require high-power, lightweight, and self-contained sources of laser radiation because of their inherent high efficiency and scalability. The two classes of chemical lasers are the hydrogen fluoride (HF) laser and the chemical oxygen-iodine laser (COIL).
Download or read book Plasma Chemical Oxygen Iodine Laser Problems of Development written by A. A. Ion in and published by . This book was released on 2002 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Great success has been obtained in the R & D of a chemical oxygen-iodine laser (COIL) operating on the electronic transition of the iodine atom, which gets an excitation from the energy donor - singlet delta oxygen (SDO). The latter is normally produced in a chemical SDO generator using very toxic and dangerous chemicals, which puts a limit for civilian applications of COIL that is still a very unique apparatus. Totally new non-chemical SDO generator is needed to allow oxygen-iodine laser to achieve its full potential as a non-hazardous efficient source of high-power laser radiation. There was interest in producing SDO in electric discharge plasma since the 50's long before COIL appearing. The idea of using SDO as a donor for iodine laser was formulated in the 70's. However, the injection of iodine molecules into a low-pressure self-sustained discharge did not result in iodine lasing. One of the main factors that could prevent from lasing in many experiments is a rather high threshold yield 15% at 300 K, which is needed for obtaining an inversion population. An analysis of different attempts of producing SDO in different kinds of electric discharge plasma has been done which demonstrates that high yield at gas pressure of practical interest (p> 10 Torr) for modem COIL technology can be obtained only in non-self sustained electric discharge plasma. The reason is that the value of relatively low reduced electrical field strength E/N ^ 10(exp -16) V. sq cm, which is an order of magnitude less than that for the self-sustained discharge, is extremely important for the efficient SDO production. Although different kinds of non-self sustained discharges can be used for SDO production, we got started experiments with e-beam sustained discharge in gas mixtures containing oxygen. High specific input energy up to 3 - 5 kJ/I. atm O2 has been experimentally obtained.
Download or read book Micro Chemical Oxygen Iodine Laser COIL written by and published by . This book was released on 2007 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been previously proposed to improve the performance and compactness of chemical oxygen-iodine lasers (COIL) through the replacement of some of their macroscale components with arrays of higher-performing microscale (MEMS) components. In this program, a MEMS singlet oxygen generator (SOG) to power a COIL laser was designed, microfabricated from silicon and glass wafers, and successfully demonstrated. The MEMS SOG contained an array of reaction channels for the chemical reaction of BHP and chlorine gas, a liquid-gas separator based on capillary effects, and integrated heat exchangers for thermal management. The MEMS SOG was shown to have high singlet delta oxygen yield, high output flow rates, and an ability to operate in near single-pass reactant utilization. The results were also shown to agree with the models. In addition, devices for a second generation MEMS COIL system (second generation MEMS SOG, MEMS steam generators to power ejector pumps, and component interfaces) were designed. Based on its models, the second generation MEMS SOG is predicted to operate at four times higher flow rates than the first generation MEMS SOG. Based on its models, the MEMS steam ejectors are predicted to offer a low vibration, compact source of driving fluid for a COIL pumping system.
Download or read book International Symposium on Gas Flow Chemical Lasers and High Power Lasers written by and published by . This book was released on 2004 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in High power Lasers and Their Applications written by C. Pellegrini and published by North Holland. This book was released on 1981 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultra High Power Lasers for Practicable Applications written by Leroy E. Wilson and published by . This book was released on 1976 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Workshop on Iodine Lasers and Applications written by and published by . This book was released on 1995 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nd and iodine a comparison of two high power lasers written by Günter Brederlow and published by . This book was released on 1979 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Gasdynamic Electric Discharge pumped Oxygen Iodine Laser DOIL written by Adam Jeffrey Hicks and published by . This book was released on 2006 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The following thesis presents a new experimental facility in the Non-Equilibrium Thermodynamic Laboratories at The Ohio State University for the design and testing of an electric Discharge-Pumped Oxygen Iodine Laser (DOlL). The thesis discusses the design and operation of the facility, diagnostics and measurement techniques used, and recent results. The experimental apparatus designed and built specifically for this experiment includes a discharge test section where singlet delta oxygen (SDO) is produced, a supersonic expansion and laser cavity, an iodine injection and measurement system, laser mirror mounts, and specialized DC and pulsed electrodes. The supersonic laser cavity expands the flow to M = 3 and has a maximum run time of about 20 seconds. Auxiliary flows on either side of the core flow ensure good flow quality and act to keep the iodine vapor isolated from the test section walls and mirrors. A supersonic diffuser was designed and tested to increase the effective run time but was found to be ineffective at the present conditions. The discharge used was a crossed pulser-sustainer discharge powered by a Chemical Physics Technologies custom-designed and built pulsed power supply as well as a Glassman High Voltage DC power supply capable of generating 5 kV maximum voltage and 2 A maximum current. The power supply was modified to disable the arc quenching feature since rapid changes in current were normal at the present conditions. The crossed discharge was operated for 4-15 seconds at pressures of 60 or 120 torr and DC voltages of 1.5 to 3.3 kV, at currents of up to 2 A and pulser repetition rates of 20 to 50 kHz, with a ballast resistance of 1 k. For each run, DC voltage, pulser voltage, DC current, and visible or infrared (IR) emission spectra were measured. These data were then used to calculate discharge parameters, flow temperature, and singlet delta oxygen yield. Yields of about 5.0% were measured at discharge pressures of 120 torr and yields of about 5.7% were measured at discharge pressures of 60 torn These yields are several times higher than the theoretical yields calculated at flow temperatures in the laser cavity after the Mach 3 supersonic expansion. Finally, future goals for the experiment are discussed such as the injection of iodine, measurement and optimization of gain, and addition of laser mirrors for the extraction of laser power.
Download or read book Iodine Laser written by William Harry Halliday and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been a project at the Naval Postgraduate School for the past two years to build a high power, short pulse, Iodine Photodissociation Laser to be used for plasma and nuclear fusion related research. The first attempt, reported previously, met with difficulties. This paper details the changes made to the previous system in order to achieve a working laser. Lasing was observed for the first time on 31 January 1977. First shot energies up to 150 milljoules have been obtained in a pulse length of 15 microseconds. Investigation was carried out on the reduction in output energy with repeated shots on the same gas filling. The rate of deterioration was shown to increase with increasing fill pressure and to be caused mainly by the formation of molecular iodine. Removal of the molecular iodine between shots significantly reduced the deterioration rate. (Author).
Download or read book A High Pressure Plasma Source for Pumping Atomic Iodine Lasers written by K. S. Han and published by . This book was released on 1984 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Near uv emission in the 200-300nm range of hypocycloidal-pinch plasma device has been measured spectroscopically and applied for laser excitation. Operation at super atmospheric fill-gas pressures of argon significantly elevates the uv emission. A quadradic increase of the iodine laser output was observed as the fill-gas pressure increased. Successful operation of the HCP as a laser-pump source on the input-energy-density and the fill-gas pressure ranges beyond those of conventional flashlamps was thus demonstrated. Additional keywords: Reprint; High power; Flash lamps; Army research. (Author).
Download or read book Laser Optics 2006 written by Oleg B. Danilov and published by SPIE-International Society for Optical Engineering. This book was released on 2007 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Download or read book Gas Lasers written by Masamori Endo and published by CRC Press. This book was released on 2018-10-03 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lasers with a gaseous active medium offer high flexibility, wide tunability, and advantages in cost, beam quality, and power scalability. Gas lasers have tended to become overshadowed by the recent popularity and proliferation of semiconductor lasers. As a result of this shift in focus, details on modern developments in gas lasers are difficult to find. In addition, different types of gas lasers have unique properties that are not well-described in other references. Collecting expert contributions from authorities dealing with specific types of lasers, Gas Lasers examines the fundamentals, current research, and applications of this important class of laser. It is important to understand all types of lasers, from solid-state to gaseous, before making a decision for any application. This book fills in the gaps by discussing the definition and properties of gaseous media along with its fluid dynamics, electric excitation circuits, and optical resonators. From this foundation, the discussion launches into the basic physics, characteristics, applications, and current research efforts for specific types of gas lasers: CO lasers, CO2 lasers, HF/DF lasers, excimer lasers, iodine lasers, and metal vapor lasers. The final chapter discusses miscellaneous lasers not covered in the previous chapters. Collecting hard-to-find material into a single, convenient source, Gas Lasers offers an encyclopedic survey that helps you approach new applications with a more complete inventory of laser options.
