A phase sensitive optical rotation measurement in a scattered chiral medium using a Zeeman laser

Chien Chou*, Wen Chuan Kuo, Tung Sheng Hsieh, Hui Kang Teng

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

22 Scopus citations

Abstract

A novel circular polarized optical heterodyne interferometer using a Zeeman laser to measure optical rotation both in nonscattered and scattered chiral medium is proposed. A pair of correlated orthogonal circular polarized light waves of different temporal frequency propagating in the chiral medium at different speed is studied. This results in phase retardation between circular polarized light waves of which the phase difference is proportional to the optical rotation angle of a linear polarized light in a chiral medium. In the mean time, two orthogonal circular polarized light waves can be treated as a circular polarized photon pair that is able to reduce the scattering effect in a scattered chiral medium. Then the optical rotation angle can be measured in the scattering medium. In addition, a common-path configuration with respect to circular polarized light waves immune the background noise. This further improves the sensitivity on optical rotation measurement based on phase difference detection.

Original languageEnglish
Pages (from-to)259-266
Number of pages8
JournalOptics Communications
Volume230
Issue number4-6
DOIs
StatePublished - 01 02 2004
Externally publishedYes

Keywords

  • Optical activity

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