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A spectrum converter dye for enhancement of blue-green laser efficiency (1986)

Han, K. S. ; Oh, C. H. ; Lee, J. H.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 60 (1986), S. 3414-3416

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: In order to enhance the efficiency of a blue-green laser through spectrum conversion of the pumping light, a converter dye BBQ was mixed in the laser dye solutions. The laser was pumped with a plasma radiation source. The increase of laser output over the maximum obtainable from the pure dye operation was better than 80% for the dye mixture of LD490+BBQ or coumarin 503+BBQ. The estimated enhancement calculated by a simple spectrum conversion model agrees well with the experimental results. The enhancement is mainly effected by irradiance in the UV from the pumping source, the fairly good match of the fluorescence band of converter dye with the absorption band of the laser dye, and the lack of the overlap of the fluorescence band of the laser dyes with the triplet–triplet absorption band of the converter dye used.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.337639

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Analysis of cylindrical shells under patch loading (1986)

Lin, J. S. ; Hourani, M. ; Gould, P. L. ; [et al.]

New York, NY [u.a.] : Wiley-Blackwell

Communications in Applied Numerical Methods 2 (1986), S. 571-585

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ISSN: 0748-8025

Keywords: Engineering ; Engineering General

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Mathematics , Technology

Notes: The object of this study is to predict the peak values of the stress resultants and couples in a relatively thick cylindrical shell under a concentrated local loading in order to guide the design of a large-scale reinforced concrete test specimen. Four finite element programs, SHORE-III, two versions of RONALD, and ANSYS, were employed here. The SHORE-III and RONALD analyses considered a complete cantilevered cylinder, while the ANSYS model treated a cylindrical panel free along the curved edge and constrained in various ways along the longitudinal edge. Comprehensive comparative results are provided for the linear elastic loading case, which indicate the magnitude and attenuation of concentrated loading effects on cylindrical shells and panels.

Additional Material: 22 Ill.