Gas-phase optical activity measurements using a compact cavity ringdown polarimeter
We present a compact polarimeter, which can perform sensitive measurements of optical rotation in vapor. The operation of the polarimeter is based on a Cavity Ring-Down scheme which employs two signal reversals, which increase sensitivity and reduce noise, allowing the realization of sensitive measu...
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Published in | Laser physics Vol. 30; no. 7; pp. 75602 - 75605 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.07.2020
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Subjects | |
Online Access | Get full text |
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Summary: | We present a compact polarimeter, which can perform sensitive measurements of optical rotation in vapor. The operation of the polarimeter is based on a Cavity Ring-Down scheme which employs two signal reversals, which increase sensitivity and reduce noise, allowing the realization of sensitive measurements in the presence of spurious birefringence. We describe the operation of the polarimeter, give the basic equations for the signal analysis and retrieval of optical rotation angle, and present measurements that demonstrate a sensitivity of ∼80 μdeg/pass. |
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Bibliography: | 2020LP0097 |
ISSN: | 1054-660X 1555-6611 |
DOI: | 10.1088/1555-6611/ab8d2e |