Abstract
The first discovery of optical activity was pointed out by Arago and Biot1 in 1811. Many instruments, such as optical rotatory dispersion (ORD) and circular dichroism (CD), have been applied to measure the dissymmetry of molecular structure. However, those conventional instruments do not have the capability of measuring optical activities in real time, and mechanical errors often reduce the accuracy of the measurement. Besides, none of these instruments has the power to exact the phase information of the optical activity. In this experiment, a optical heterodyne polarimeters was set up for measuring the rotation angle and phase shift of solid substances using a lock-in amplifier and phase meter techniques.
© 1993 Optical Society of America
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