Patterns in Broad-Area Microcavities
نویسندگان
چکیده
منابع مشابه
Dynamic transition from modelike patterns to turbulentlike patterns in a broad-area Nd:YAG laser.
We report the first experimental observation to our knowledge of a dynamic transition from modelike patterns to completely disordered patterns in a large-aspect-ratio Nd:YAG laser. Recordings of near-field patterns with an integration time as small as 1 ns allow us to follow the evolution of the transverse intensity profile along the output pulse of the laser.
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We measure polarization-resolved instantaneous patterns in a large-aspect ratio quasi-isotropic Nd:YAG laser. High correlation between the instantaneous orthogonal polarization patterns recorded at the earlier stages of the laser pulse has been found due to the strong cross saturation between both polarization modes.
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Positron beam and helium desorption techniques have been applied to different materials, in particular semiconductor materials, to determine the presence of defects. The positron technique yields values of the positron diffusion length and values of the Doppler broadening parameters. In principle, defect concentrations can be derived and an indication can be obtained about the nature of the def...
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ژورنال
عنوان ژورنال: physica status solidi (b)
سال: 2000
ISSN: 0370-1972,1521-3951
DOI: 10.1002/1521-3951(200009)221:1<133::aid-pssb133>3.0.co;2-9