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Schematic representation of a laser reflecting from a cantilever into a PSD detector.
(a) and (b) Comparison between experimental (symbols) and calculated data (solid lines) for the PSD signal versus cantilever deflection for different PSD detector angles . The fixed geometrical parameters of the system were: , , , , and .
(a) PSD signal versus cantilever deflection for , , , , , , , and . In this case the solid lines represent calculated data while the symbols represent linear fits. (b) Difference between the calculated data and the straight line fit for , , and . (c) Slope of the optimized PSD/cantilever deflection curves versus PSD/cantilever separation . Calculated data is shown by solid dots while the solid line shows a linear fit to the data.
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