400 research outputs found

    Eg versus x relation from photoluminescence and electron microprobe investigations in p-type Hg1−xCdxTe (0.35 =< x =< 0.7)

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    Combined photoluminescence (at 10 T 300 K) and electron microprobe investigations have been carried out with HgCdTe samples grown from the melt or from solution. By exciting the samples through metallic masks with 200 μm diameter holes fixed with respect to the sample care was taken to pick-up both characteristic X-ray radiation as well as the photoluminescence from the same sample area. The Eg versus x relation determined in this way at T = 30 K has been compared with data from the interband absorption edge by other authors

    Enleiramento e colheita de canola.

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    bitstream/CNPT-2010/40707/1/p-do89.pd

    Ervilha: uma nova opção de alimento para suínos.

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    bitstream/item/85486/1/DCOT-318.pd

    Performance of canola genotypes in Mato Grosso do Sul, 2006.

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    bitstream/CNPT-2010/40316/1/p-bp43.pd

    Desempenho de genótipos de canola no Mato Grosso do Sul, 2006.

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    bitstream/CNPT-2010/40313/1/p-bp40.pd

    Near-field dynamics of broad area diode laser at very high pump levels

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    Near-field properties of the emission of broad area semiconductor diode lasers under extremely high pumping of up to ∼50 times the threshold are investigated. A transition from a gain to thermally-induced index guiding is shown under operation with single pulses of 300 ns duration. At highest output powers, catastrophic optical damage is observed which is studied in conjunction with the evolution of time-averaged filamentary near-field properties. Dynamics of the process is resolved on a picosecond time scale
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