ARPA-NBS program of research on high temperature materials and laser materials: reporting period January 1 to June 30, 1971
United States. National Bureau of Standards, Institute for Materials Research (U.S.). Inorganic Materials Division
U.S. Dept. of Commerce, National Bureau of Standards, 1971 - Glass - 36 pages
Brief reviews are given of work performed on a number of projects concerned with High Temperature Materials and with Laser Materials. Under the High Temperature Materials heading, topics include diffusion of oxygen in oxides, growth of Al2O3 crystals by chemical vapor deposition, the electronic structure of transition metal borides and related compounds, the optical constants of titanium, high temperature creep in copper, fracture in glass, the mechanism of volatilization of polymers and long-chain compounds, and the interaction between mechanical relaxation and annealing in polymers. Work on Laser Materials includes measurement of bulk optical and elastic properties of laser materials, a study of the 'orange' degradation of ruby, measurements of sub-crystal misalignment in ruby, damage in glass induced by high-energy laser pulses, chemical analyses for ruby and Nd-doped laser glasses, and preliminary studies on detection of submicroscopic inhomogeneities in glass. (Author).
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A. D. Franklin additional for foreign Advanced Research Projects ARPA-NBS Program automatic data processing beam profile beam radius BEAM SPLITTER beam waist birefringence BSC glass Bureau of Standards burn patterns ceramic crossed polaroids crown glass damage processes damage threshold damage track diameter diffusion in oxides diffusion rates double pass polariscope electrostrictive entrance face ferroelectric Figure foreign mailing Franklin and H. S. fringe pattern Gaussian GAUSSIAN BEAM H. S. Bennett helium-neon laser High Temperature Materials Inorganic Materials Division Institute for Materials laser beam Laser Materials laser system mass spectrometer mass transport Materials and Laser Materials Division Institute Materials Research metal National Bureau obtained optical path lengths oscillator rod oscilloscope physical measurement Pockels cell polarization pulse width pumping reaction of BrF refractive index Research on High Research Projects Agency sintering Standard Reference stress Summary theoretical theories of self-focussing tracks in BSC Twyman-Green interferometer wavelength