With the publication of this second supplement to the Continuing Bibliography entitled "Lasers and Masers", NASA SP-7009, the National Aeronautics and Space Administration continues its program of distributing selected references to reports and articles on aerospace subjects that are currently receiving intensive study. All references have been announced in either Scientific and Technical Aerospace Reports (STAR), International Aerospace Abstracts (IAA), or the NASA Continuing Bibliography Aerospace Medicine and Biology (NASA SP-7011 and its supplements). They are assembled in this bibliography to provide a reliable and convenient source of information for use by scientists and engineers who require this kind of specialized compilation. In order to assure that the distribution of this information is sustained, Continuing Bibliographies are updated periodically through the publication of supplements which can be appended to the original issue. The scope of coverage of this supplement, NASA SP-7009 (02), is extensive, and references to all major studies associated with the research on, and development of, lasers and masers are included. Special emphasis is given to laser and maser applications as they relate to ranging and communications systems, astronomy and optics, and metalworking. Pertinent references to fundamental studies devoted to the physical and electronic properties of lasers and masers, as well as their function and performance, will also be found in this collection. Each entry in the bibliography consists of a citation and an abstract. The listing of entries is arranged in two major groups. Report literature references are contained in the first group and are arranged according to their date of announcement in STAR. The second group includes published literature references, arranged according to their date of announcement in IAA, or in Aerospace Medicine and Biology. All reports and articles cited were introduced into the NASA information system during the period February, 1966-April, 1967. A subject index and a personal author index are included. These indexes use the Notation of Content (NOC), a one-sentence description of the contents of a document, rather than the title, to aid the user in locating pertinent entries. STAR Entries (N Series) NASA documents listed are available without charge to: 1. NASA Offices, Centers, contractors, subcontractors, grantees, and consultants. 2. Other U.S. Government agencies and their contractors. 3. Libraries in the United States that maintain collections of NASA documents for public reference. 4. Other organizations in the United States have a need for NASA documents in work related to the aerospace program. 5. Foreign government or academic (university) organizations that have established reciprocal arrangements for the exchange of publications with NASA, that have current agreements for scientific and technical cooperative activities with NASA, or that have arrangements with NASA to maintain collections of NASA documents for public use. Department of Defense documents (identified by the "AD" number in the citation) are available without charge to U.S. Government-sponsored research and development activities from the Defense Documentation Center (DDC), Cameron Station, Alexandria, Virginia 22314. Department of Defense documents are not available from NASA. Other non-NASA documents are provided by NASA without charge only to NASA Offices, Centers, contractors, subcontractors, grantees, and consultants. Foreign non-copyrighted documents will be provided to U.S. Government Agencies and their contractors. AGARD reports that are not commercially available will be made available on the same basis as NASA documents. Documents that have been placed on microfiche are identified with the symbol #. Microfiche are available on the same basis as hard-copy. The public may purchase the documents listed from either of two sales agencies, as specifically identified in the citations. Clearinghouse for Federal Scientific and Technical Information (CFSTI), Springfield, Virginia 22151 Superintendent of Documents U.S. Government Printing Office (GPO) Information on the availability of this publication and other reports covering Scientific and Technical Information Division National Aeronautics and Space Administration Washington, D.C. 20546. Collections of NASA documents are currently on file in the organizations listed on the inside of the back cover. iv (continued) All articles listed are available from the American Institute of Aeronautics and Astronautics, Inc. Individual and Corporate AIAA Members in the United States and Canada may borrow publications without charge. Interlibrary loan privileges are extended to the libraries of government agencies and of academic nonprofit institutions in the United States and Canada. Loan requests may be made by mail, telephone, telegram, or in person. Additional information about lending, photocopying, and reference service will be furnished on request. Address all inquiries to: Technical Information Service American Institute of Aeronautics and Astronautics, Inc. 750 Third Avenue, New York, New York 10017 For further details please consult the Introductions to STAR and IAA, respectively. LC Entries Articles listed are available in the journals in which they appeared. They may be borrowed or consulted in libraries maintaining sets of these journals. In some instances, reprints may be available from the journal offices. N67-10788*# National Aeronautics and Space Administration. Goddard Space Flight Center, Greenbelt, Md. ELECTRO-OPTIC LIGHT MODULATORS E. Hirschmann Washington, NASA, Nov. 1966 17 p refs (NASA-TN-D-3678) CFSTI: HC $1.00/MF $0.50 CSCL 20E This report discusses the performance of KD2P, GaAs and HMTA light modulators. The KD2P crystals have given excel- lent results in modulating a laser beam. Alignment of the crystal with relation to the light beam is very critical. GaAs appears at this time to be the best electro-optic crystal material for a light modulator in the infrared region between 0.9 and 16 microns. Strain-free GaAs can be grown with resistivities exceeding 106 ohm-cm. At this time, the use of HMTA as a light modulator CONVECTIVE AND RADIATIVE HEAT TRANSFER DURING SUPER- H. Hoshizaki and K. H. Wilson (Lockheed Aircraft Corp., Lockheed Missiles and Space Co., Research Laboratories, Palo Alto, Calif.). (American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting, 3rd, New York, N. Y., Jan. 24-26, 1966, Paper AIAA Journal, vol. 5, Jan. 1967, p. 25-35. 30 refs. For abstract see issue 07, page 1155, Accession no. A66-18459] ON MICROFICHE AUTHOR'S vi a continuing bibliography with indexes JULY 1967 Tech N66-24104# Stanford Univ., Calif. Microwave Lab. ENERGY TRANSFER IN SOLID LASER MATERIALS nical Summary Report No. 6, 1 Aug.-31 Oct. 1965 A. L. Schawlow et al Dec. 1965 6 p ref (Contract Nonr-225(78); ARPA Order 306-64) (ML-1393: AD-628076) CFSTI: HC $1.00/MF $0.50 Methods are studied of exciting solid materials for visible. and possibly ultraviolet, maser action; and of energy transfer processes between energy levels and between ions. Author (TAB) N66-24728# General Precision, Inc.. Little Falls. N. J. Research Center. Semiannual Technical Re LIQUID LASER PARAMETERS port, Aug. 1, 1965-Jan. 31, 1966 Harvey Forest, Daniel Grafstein, and Aryeh H. Samuel 28 Feb. 1966 28 p ref (Contract Nonr-4644(00): ARPA Order 306-62: Proj. Defender) (AD-628526) CFSTI: HC $2.60/MF $0.50 Studies were made of europium complexes of hexamethyl phosphoramide triethyl phosphate, and tri-n-butyl phosphate, which are promising direct-excitation liquid laser materials. An overall quantum efficiency of 0.5 for fluorescence was measured. It was found that complex formation is essentially complete when the Eu concentration is below 0.2 M even when hydrated Eu salts are used. The excess of 5Do states required for laser action was calculated. A laser threshold of 6.3 watts/ cm3 per Å interval of the absorption band is calculated on the basis of these data for a 0.02 M europium complex in a 5 cm tube. Additional compounds prepared include: triethyl phosphate complexes of Sm Cl3. Nd Cl3. PrCl3. and Tb Cl3, which resemble the Eu Cl3 complexes; also Eu Cl3 complexes with triphenyl phosphate, urea, thiourea, dimethyl sulfoxide, dimethyl formamide, dimethyl acetamide, and tetramethylurea. Fluorescence in the complexes having C=O and S-O ligands is enhanced over that in aqueous Eu solutions, but not as much as in P=0 complexes. The formation of precipitates from heated EuCl3-alkyl phosphate complexes was further studied and a formula for the precipitate is proposed. TAB Ronald L. Grotbeck and Glenn Doughty Jan. 1966 27 p ref (AFWL-TR-65-220; AD-628295) CFSTI: HC $2.00/MF $0.50 Experiments to determine the relative intensity of light scattered at various angles from several materials were performed. Various target materials were mounted on an optical bench and illuminated by a Spectra Physics 116 gas laser. The targets were rotated through various angles with respect to the optical bench, and the distance between the detector and target was varied to record a constant voltage reading on a 555 oscilloscope. Different graphs showing isointensity lines for various angles of incidence as well as graphs showing the percent of intensity reflected as a function of distance were then plotted. Author (TAB) |