Download or read book Extinction of DF Laser Radiation Derived from Outdoor Atmospheric Measurements written by James W. Cusack and published by . This book was released on 1976 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advancements in the development of the DF (Deuterium Flouride) laser as a high power device have prompted interest in better defining atmospheric propagation constants for the region of the infrared spectrum in which it emits, 3.5 to 4.0 microns. Existing low resolution spectroscopic studies of these wavelengths indicate that it is a 'window' region and has reasonably better transmission characteristics than most of the infrared. This report covers outdoor field measurements of the atmospheric transmission of four dominant DF laser lines. The measurements were performed at the Advanced Optical Test Facility located at the Verona Test Annex of the Rome Air Development Center. The measurements were made with a pulsed DF laser which was used to transmit across a propagation path of 2000 feet in length. Results are reported here for the 2-1 P(8), 2-1 P(9), 3-2 P(8) and the 2-1 P(6) DF lines. The experimental results are analyzed and compared with the latest in-laboratory measurements. Results indicate that in high humidity environments the differences between laboratory and field measurements become increasingly larger. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Atmospheric Extinction Measurements at Nd YAG and DF Laser Wavelengths Performed in Conjunction with the JAN Propagation Tests June September 1975 written by Naval Research Laboratory (U.S.). Optical Radiation Branch and published by . This book was released on 1978 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NRL Infrared Mobile Optical Radiation Laboratory (IMORL) consisting of various infrared laser sources, large-aperture collimating optics, and precision calibrated infrared detectors and electronics was operated in conjunction with the JAN Baseline Demonstration Laser propagation tests during June-September 1975. The trailer-housed elements of the IMORL unit were deployed so as to use an atmospheric measurement path about 5 km long between the TRW Capistrano Test Site and Camp Pendleton Marine Base. Extensive measurements of atmospheric transmission at several DF laser wavelengths between 3.6 and 4.1 micrometers were obtained as well as measurements at the Nd-YAG laser wavelength of 1.06 micrometers. The optical measurements were supported by meteorological observations near the IMORL transmitter and receiver sites. Atmospheric aerosol distributions were monitored during the experiments, and Mie scattering calculations were performed using the aerosol data and were compared to aerosol extinction values derived from the optical measurements obtained using the 5-km-long path. The water-vapor dependence of molecular absorption for each of the 22 DF laser lines studied was compared to values obtained during earlier experiments at the Cape Canaveral Air Force Station and to theoretical predictions based on a HI-TRAN calculation using a line atlas. The experimental apparatus used (IMORL facility) and the measurements procedures followed are briefly described. The measurement results obtained and their comparisons to theoretical predictions for molecular absorption and aerosol scattering at DF laser wavelengths are presented and discussed. (Author).
Download or read book Journal of Current Laser Abstracts written by and published by . This book was released on 1978 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Extinction and High Resolution Atmospheric Transmission Measurements Conducted at White Sands Missile Range New Mexico March 1979 written by J. A. Dowling and published by . This book was released on 1980 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of atmospheric transmission over a 6.4-km path were conducted in March 1979 at White Sands Missile Range (WSMR), New Mexico. A deuterium fluoride (DF) laser and a high-resolution Fourier transform spectrometer (FTS) system were used to generate high-quality transmission spectra of the 6.4-km path accurate to + or - 3% in absolute transmission. Details of the procedures used and results obtained in the absolute transmission calibration of the spectra are presented. Path integral values for HDO, H2O, CH4, and N2O concentrations have been derived from the spectra and results of this analysis are described. Comparisons of measured DF laser extinction coefficients with calculated molecular absorption values are presented which show very small aerosol attenuations, generally
Download or read book Aerosol Attenuation in the 2 4 Micrometer Region written by Robert C. Sepucha and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an experimental facility being constructed to measure the extinction and scattering of DF laser radiation by atmospheric aerosols. The details of the apparatus and the theory of the measurements are presented.
Download or read book Aerosol Attenuation in the 2 4 Micrometers Region written by Robert C. Sepucha and published by . This book was released on 1976 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an experimental facility constructed to measure the extinction and scattering of DF laser radiation by atmospheric aerosols. The details of the apparatus, the theory of the measurements, and calibration results are presented. (Author).
Download or read book Absorption of Deuterium Fluoride Laser Radiation by the Atmosphere written by Frank Schriver Mills and published by . This book was released on 1975 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Absorption of deuterium fluoride (DF) laser radiation by atmospheric gases was measured for five absorbers and 8 laser lines using a single frequency, pulsed DF laser and a large multipass absorption cell. N2O, CH4, C2O, HDO and H2O absorption was investigated for the 2-1 P(6), P(7), P(8), P(10), and P(11) lines and the 3-2 P(6), P(7), and P(8) lines of the DF laser. For the mid-latitude summer sea level atmospheric model (14.3 torr H20, 1.6 ppm CH4, 0.28 ppm N2O, temperature 296K, total pressure 760 torr) the total molecular absorption coefficients are between 0.318 per km and 0.116 per km corresponding to a transmittance over a 10 km path of from 31 to 73 percent. Assuming the mid-latitude summer model atmosphere, the water vapor continuum absorption coefficient for the eight lines is approximately 0.02 per km. The measured HDO absorption coefficients vary from 0.006 per km to 0.095 per km for the lines studied and the N2O absorption coefficients vary from .002 per km to 0.45 per km. The CH4 absorption coefficients were found to be on the order of 0.0001 or 0.0001 per km. The accuracy of the measured absorption coefficients is + or -5%. Measurements of H2O absorption at 24 C with 14.3 torr H2O and 760 torr total pressure confirm the water continuum absorption coefficients obtained by extrapolating the high temperature measurements.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994-06 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1982 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Optical Society of America written by and published by . This book was released on 1974 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extinction of CO2 Laser Radiation Under Adverse Weather Conditions written by Vincent Chimelis and published by . This book was released on 1981 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extinction and Backscatter of Visible and Infrared Laser Radiation by Atmospheric Aerosols written by David Barringer Rensch and published by . This book was released on 1969 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmospheric Transmission of Laser Radiation Computer Code LASER written by and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer code called LASER has been developed and documented and will be made available to interested users. LASER is a version of HITRAN which computes the monochromatic extinction coefficients for both molecular and particulate components of the atmosphere and provides results for a series of atmospheric models from sea level to 100 km in altitude. A detailed description of the calculations leading to these extinction coefficient charts is provided, and charts are provided for a number of specific laser frequencies in order to bring up to date previously published results. In addition, high spectral resolution atmospheric transmission spectra have been provided covering the regions of CO2, CO, and DF laser emission. These plotted spectra represent an up-to-date version of previously published material.
Download or read book Laser Focus written by and published by . This book was released on 1977 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Springer Handbook of Lasers and Optics written by Frank Träger and published by Springer Science & Business Media. This book was released on 2012-05-05 with total page 1704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition features numerous updates and additions. Especially 4 new chapters on Fiber Optics, Integrated Optics, Frequency Combs and Interferometry reflect the changes since the first edition. In addition, major complete updates for the chapters: Optical Materials and Their Properties, Optical Detectors, Nanooptics, and Optics far Beyond the Diffraction Limit. Features Contains over 1000 two-color illustrations. Includes over 120 comprehensive tables with properties of optical materials and light sources. Emphasizes physical concepts over extensive mathematical derivations. Chapters with summaries, detailed index Delivers a wealth of up-to-date references.
Download or read book Laser Radar Technology and Applications written by National Research Council Canada and published by Bellingham, Wash. : SPIE--The International Society for Optical Engineering. This book was released on 1986 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
