The three intensity polarizer-sample-analyzer imaging ellipsometry is used to measure the ellipsometric parameters (&PSgr;,&Dgr;). In addition to the ellipsometric parameters, we introduce an extra angle &agr; to measure the of the azimuth deviation of polarizer. After careful calibration, we found this deviation can indicate how much the surface normal slanted from the plane; then it can be used to deduce the thickness profile coated on a cylindrical lens. Using this technique, we not only can determine the radius curvature of the curved surface, we also can calculate the thickness of the thin film coated on a curved surface.
An amplitude sensitive optical heterodyne polarimeter was setup in order to monitor noninvasively the aqueous glucose concentration in rabbit's eye. A range of the blood glucose from 35 mg/dl to 135 mg/dl was measured in vivo by biological glucose assay (BGA), while the optional rotation of the aqueous glucose was measured by a polarimeter simultaneously. The experimental results showed the consistence between these two independent measurements. There was no time delay between the blood glucose and the aqueous glucose when the blood glucose was descending after the insulin was injected. It was in contract to a 10 minutes time delay when the blood glucose was ascending. The detection sensitivity of the polarimeter was 4 mg/dl in the measurement.
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