Polarization dependent cavity ring down spectroscopy

Engeln, Richard; Berden, Giel; van den Berg, Esther; Meijer, Gerard

doi:10.1063/1.474808

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Polarization dependent cavity ring down spectroscopy

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Engeln, R., Berden, G., van den Berg, E., & Meijer, G. (1997). Polarization dependent cavity ring down spectroscopy. The Journal of Chemical Physics, 107(12), 4458-4467. doi:10.1063/1.474808.

Cite as: https://hdl.handle.net/21.11116/0000-000B-6AFA-5

Abstract

We here theoretically outline and experimentally demonstrate that polarization spectroscopy can be combined with cavity ring down (CRD) spectroscopy, thereby retaining the specific advantages of both techniques. The b¹Σ⁺_g(v′=2)←X³Σ^⎯_g(v′′=0) transition of molecular oxygen around 628 nm is used to demonstrate the possibility to selectively measure either the polarization-dependent absorption or the resonant magneto-optical rotation of gas-phase molecules in the appropriate setup. Just as in CRD absorption spectroscopy, where the rate of absorption is measured, in the here presented polarization-dependent CRD (PDCRD) detection scheme the rate of polarization rotation is measured, which enables the polarization rotation to be quantitatively determined. Apart from studying electro-optic and magneto-optic phenomena on gas-phase species, the PDCRD detection scheme is demonstrated to be applicable to the study of magneto-optical rotation in transparent solid samples as well.