A polarimeter for measurement of transient retardation changes.


An electronic polarimeter is described in which a signal-sampling technique and feedback are used together to measure periodic retardation changes. A Faraday cell is arranged to feed back a rotation just sufficient to cancel that caused by the unknown retardation, so that the Faraday cell current provides the quantitative measure desired. The… (More)
DOI: 10.1364/AO.8.001837


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