Download or read book Study of a High Repetition Rate CO2 Tea Laser and Repetition Rate Induced Discharge Instabilities written by Wayne Elmer Faszer and published by . This book was released on 1980 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Sealed High Repetition Rate Tea CO2 Laser written by Paul W. Pace and published by . This book was released on 1977 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compact atmospheric pressure CO2 laser utilizing a double-discharge technique has been constructed and operated at moderate repetition rates. With the addition of small amounts of hydrogen and carbon monoxide to the He-CO2-N2 gas mixture, sealed operational lifetimes exceeding 2 x ten to the 6th power pulses have been obtained. Operating in this mode, the output energy is about 250 mJ/pulse at repetition frequencies of 40-50 pulses/s.
Download or read book Gas Re Circulation System for a Miniature High Repetition Rate TEA CO2 Laser written by P. Pace and published by . This book was released on 1976 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: When an atmospheric pressure transverse discharge CO2 laser with forced gas flow is pulsed at a high repetition rate, the minimum time between arc-free discharges is larger than the time predicted by the ratio of discharge width to gas flow velocity. The maximum pulse rate can be predicted by a flow model, the results of which are summarized. The predictions of the model are compared with the experimental results and the design considerations involved in the construction of the gas re-circulation system are presented. (Author).
Download or read book A Compact High Repetition Rate TEA CO2 Laser written by Defence Research Establishment Valcartier and published by . This book was released on 1976 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frequency and Amplitude Characteristics of a High Repetition Rate Hybrid Tea Co2 Laser written by Jean-Louis Lachambre and published by . This book was released on 1977 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The envelope and frequency characteristics of the output pulse of a high-repetition-rate hybrid TEA-CO2 laser are presented. Both the intrapulse and interpulse laser frequency stability are experimentally determined at repetition rates up to 300 Hz. The recovery of the CW laser signal following the generation of the TEA laser pulse is analyzed theoretically and experimentally. Short term reproducibilities of + or - 2 MHz are observed at a pulse repetition rate of 300 Hz with initial chirp rates of about 1.5 MHz/microsec. Improvements and limits on power and repetition rate are discussed. (Author).
Download or read book High Repetition Rate Continuously Tunable CO2 Laser System Investigation written by Lourens Rasmus Botha and published by . This book was released on 1990 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Repetition Rate Tea CO2 Laser written by M. F. Turgeon and published by . This book was released on 1971 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This correspondence reports on the successful operation of a TEA CO2 laser at rates up to 1000 pps with an average output power up to 65 W over long periods of time. An essential feature of the present system is a rapid gas circulation transverse to the laser axis combined with a large volume of ambient gas. It is found that decomposition of the gas is one of the major problems at high repetition rates. (Author).
Download or read book A Frequency Stabilized Compact High Repetition Rate TEA CO2 Laser written by Paul W. Pace and published by . This book was released on 1979 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Pulse Interaction in CO2 Lasers written by Hermann A. Haus and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: ;Contents: High-repetition rate low-pressure laser; Spontaneous mode locking in TEA lasers; Negative saturation; Mode locking and cavity dumping; Parametric studies of the CO2 laser; Cross relaxation in a low-pressure CO2 cell; Instantaneous frequency measurement of the TEA laser.
Download or read book A High Repetition Rate Q switched CO2 Laser written by N. Hamilton and published by . This book was released on 1982 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Discharge Pumping Method for CO2 Lasers written by Jonah H. Jacob and published by . This book was released on 1987 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new pulsed laser discharge concept is proposed to meet military and civilian requirements for efficient operation of compact, high energy CO2 lasers. This discharge concept promises pulse lengths of up to 100 microseconds duration scalability to multi-kilojoule pulsed energy, high volumetric efficiency (> or = 50 Joules/liter-atm) and high electrical efficiency (> or = 20%). This discharge concept relies on a new method for maintaining discharge stability for long pulse durations. This new CO2 laser discharge concept promises increased efficiency, repetition rate, laser pulse length, extracted energy per unit volume and reliability. The concept utilizes a current source to insure volumetric stability. Such a source will not stabilize the discharge against streamer formation. Streamer formation can be inductively inhibited by the use of RF. Hence an RF current source could result in a more stable laser discharge.
Download or read book CO2 Lasers written by W. W. Duley and published by . This book was released on 1976 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: CO2 Lasers: Effects and Applications examines and summarizes the important applications of the device in different areas of study like physics, chemistry, and engineering. -- Google books
Download or read book Continuously Tunable High Repetition Rate RF Excited CO2 Waveguide Laser written by Stian Loevold and published by . This book was released on 1982 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of pumping a CO2 laser with a radiofrequency discharge at multiatmospheric pressures in order to obtain continuous frequency tuning has been investigated both theoretically and experimentally. Experimentally 40.68 MHz rf-excitation of discharges between parallel plate electrodes with up to 7-8 kW peak rf-power has been investigated. Emphasis has been laid on how to attain a stable glow-discharge with sufficiently long duration before arcing for integration of enough rf-power in the discharge to reach threshold for laser oscillation. A 10 atm rf-excited CO2 waveguide laser has been developed. With no dispersive elements in the laser resonator and with a 2% output coupler, input rf-power threshold for laser oscillation was 2 kW at 10 atm. Peak output power was 1.5 kW for 7-8 kW input rf-power. The output pulse has the form of a 300 ns duration gain-switched pulse followed by a tail at lower power. An efficiency (input rf-energy/laser output-energy) of 2% has been measured for the gain-switched pulse. The laser has been operated with pulse repetition rates in excess of 1 kHz, limited primarily by the available gas-flow capacity. Continuous frequency tuning between the R(12) and R(14) lines in the 10.4-micrometer band has been demonstrated. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Theses written by National Library of Canada and published by . This book was released on 1976 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
