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Journals and Conferences
A theoretical study of the nonlinear propagation of picosecond chirped pulses in single-mode fibers is presented. We show that, under appropriate conditions, spectral narrowing-rather than broadening, as is generally believed-is induced, owing to the interplay of self-phase-modulation and dispersion. For downchirped pulses at a wavelength of 0.9 microm and… (More)
A polarization-rotation switch is demonstrated that is based on semiconductor-doped glasses. The response time is shorter than 50 fs, and an on-off ratio of 38:1 could be obtained at a pulse fluence of 1.5 x 10(-6) J/cm(2), which corresponds to an intensity of 10 MW/cm(2).
We demonstrate that a combination of prisms and diffraction gratings can provide not only quadratic but also cubic phase compensation of ultrashort optical pulses. We obtain compressed pulses as short as 6 fsec.
BACKGROUND Palm kernel cake is a biodiesel byproduct and an alternative feed additive in cattle production. This study evaluated the effects of palm kernel cake added to bulls' diets on the physicochemical and sensory characteristics of their meat. Thirty-two young Nellore bulls were used, distributed in a randomized experimental design with four… (More)
A new method is described for the first few modes calculations in a interferometer that has several advantages over the Allmat subroutine, the Prony method, and the Fox and Li method. In the illustrative results shown for some cases it can be seen that the eigenvalue translation method is typically 100-fold times faster than the usual Fox and Li method and… (More)