Výsledky vyhledávání - "C. L. Marquardt"

Method for producing large, stable concentrations of Sc2+in optically clear CaF2 crystals

Autor: S. Ke, R. E. Allen, Leon Esterowitz, J. F. Pinto, C. L. Marquardt, S. B. Mirov, A. Yu. Dergachev

Publikováno v: Journal of Materials Research. 13:257-260

This communication describes a new method for producing stable, high concentrations of Sc2+ in optically clear CaF2 crystals. We have achieved Sc2+ concentrations as high as 3 × 1018 cm−3 without degradation of optical quality. We have converted a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71265e2f54c8a0bd8c992f2a76600e72
https://doi.org/10.1557/jmr.1998.0035

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Thermal lensing and power scaling of a AgGaSe2 OPO

Autor: C. L. Marquardt, D. G. Cooper, P. A. Budni, M. G. Knights, K. L. Schepler, R. DeDomenico, G. C. Catella

Publikováno v: Optical Society of America Annual Meeting.

The 2-μm pumped AgGaSe2 OPO is currently limited to outputs below 1 W and pulse recognition frequencies of a few kilohertz, apparently because of thermal lensing. Conflicting values for K and dn/dT and the lack of accurate 2-μm absorption data have

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4676db82c9a2a407700d6bf8b40d308
https://doi.org/10.1364/oam.1992.tuww5

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Excited-state absorption effects in Tm3+-activated 2-μm laser crystals

Autor: G. Rosenblatt, G. J. Quarles, C. L. Marquardt, L. Esterowitz

Publikováno v: Optical Society of America Annual Meeting.

Blue and UV fluorescence bands have been observed in Cr:Tm garnet laser materials under cw excitation at 632.8 nm. Previous studies have attributed this anti-Stokes fluorescence to upconversion processes involving Cr-Tm energy transfer. These studies

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d79d7c1d52dd881c1170a3690a981987
https://doi.org/10.1364/oam.1990.thl6

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Darkening mechanisms in silver‐halide photochromic glasses: Flash photolysis and ESR studies

Autor: R. T. Williams, J. F. Giuliani, C. L. Marquardt

Publikováno v: Journal of Applied Physics. 47:4915-4925

The darkening and subsequent fading of silver‐halide photochromic glass upon irradiation with a Q‐switched laser pulse has been investigated. Together with new steady‐state optical measurements and ESR observations of photolytic Cu++, the data

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0dc5b1d008bbe51a2cc0c5ac429a9c55
https://doi.org/10.1063/1.322494

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Radiation-Induced Defect Centers in Thermally Grown Oxide Films

Autor: C. L. Marquardt, G. H. Sigel

Publikováno v: IEEE Transactions on Nuclear Science. 22:2234-2239

Electron spin resonance and etch-back techniques have been employed to identify radiation-induced defect centers in thermally grown oxide films on SOS wafers and to determine their spatial distribution in the oxide film. The only defect identified wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b03923d874e5c654573029e0f98f23f
https://doi.org/10.1109/tns.1975.4328111

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Magnetic hysteresis in the F.M.R. spectra of fine-grained spherical iron: Possible evidence for a new carrier of hard remanence in lunar soils and rocks

Autor: C. L. Marquardt, David L. Griscom, E. J. Friebele, David J. Dunlop

Publikováno v: Earth and Planetary Science Letters. 24:78-86

Magnetic hysteresis effects have been observed in ferromagnetic resonance (FMR) spectra obtained at 9 and 16 GHz for certain simulated lunar glasses which were reduced by H 2 in the melt and rapidly quenched. Transmission electron microscopy has reve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17c42bb40387be11548c9a2d8804026d
https://doi.org/10.1016/0012-821x(74)90010-7

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Collision‐induced IR absorption in gas phase Hg(6 3P1)+HgBr2(1 1Σ+g) reactions: Enhancement of the HgBr(B 2Σ+) product channel

Autor: H. Helvajian, C. L. Marquardt

Publikováno v: The Journal of Chemical Physics. 83:3334-3339

We have investigated laser‐assisted reactions in Hg/HgBr2 gas mixtures by measuring fluorescence from the product, HgBr radical, following simultaneous IR (1064 nm) and UV (253.7 nm) laser excitation. The product emission has one‐photon dependenc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d200b66894b88ff4fa36ea6ee4842a6
https://doi.org/10.1063/1.449194

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A study of copper ions in silver‐halide photochromic glasses

Autor: C. L. Marquardt, G. Gliemeroth, J. F. Giuliani

Publikováno v: Journal of Applied Physics. 48:3669-3679

Measurements of optical absorption, kinetics, electron‐spin resonance, and flash photolysis, as well as x‐ray fluorescence and wet‐chemical analysis, have been applied to a series of silver‐halide photochromic glasses having precisely control

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d826b4569e35dbb7068d181dabbd565d
https://doi.org/10.1063/1.324281

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Formation of metallic silver on silver‐halide surfaces: Flash‐photolysis experiments on silver‐halide photochromic glasses

Autor: C. L. Marquardt, G. Gliemeroth

Publikováno v: Journal of Applied Physics. 50:4584-4590

Optical and TEM measurements are reported on a series of well‐characterized photochromic glasses containing silver‐halide microparticles. The growth rate for formation of photolytic silver is found to vary inversely as some fractional power of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea6c4da22f7887fad074ded098833c4c
https://doi.org/10.1063/1.326565

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