Storrs McCall

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A new microlaser design based on the high-reflectivity whispering-gallery modes around the edge of a thin semiconductor microdisk is described and initial experimental results are presented. Optical confinement within the thin disk plane results in a microresonator with potential for single-mode, ultralow threshold lasers. Initial experiments use selective(More)
Size estimation may be influenced by characteristics recalled about the object viewed. This study evaluated the influence of object familiarity on estimation of size. We compared size estimates of several familiar objects with size estimates of undefined objects matched for dimensions of pattern and color. Those estimating the size of the familiar objects(More)
We report room-temperature operation of electrically pumped whispering-gallery mode Ino.slGao,49P/Ino.zG~.sAs microcylinder laser diodes with emission at wavelength il= 1.0 pm and threshold current &=5 mA. Because the lasing modes do not overlap the diode's central region, carrier density is not efficiently pinned by above-threshold stimulated emission.(More)
Connexive logic differs from other alternatives to classical two-valued logic in containing theses such as ~(p→~p) and (p→q)→~(p→~q) which are two-valuedly false. In this paper a semantic tableau formulation of connexive logic is constructed, using classical tableau rules plus an additional rule enabling a contradiction to be derived from any tableau item(More)
We report a first-order structural and Mott transition accompanied by a magnetic anomaly at T=357 K in single crystal Ca 2 RuO 4 , an isomorph to the superconductor Sr 2 RuO 4. A discontinuous jump in electrical resistivity with a concomitant change in magnetic moment is triggered by a pronounced structural transition from a high temperature tetragonal(More)