Skip to main content

Cryogen-free heterodyne-enhanced mid-infrared Faraday rotation spectrometer

Author(s): Wang, Yin; Nikodem, Michal; Wysocki, Gerard

Download
To refer to this page use: http://arks.princeton.edu/ark:/88435/pr16c4m
Full metadata record
DC FieldValueLanguage
dc.contributor.authorWang, Yin-
dc.contributor.authorNikodem, Michal-
dc.contributor.authorWysocki, Gerard-
dc.date.accessioned2021-10-08T20:16:06Z-
dc.date.available2021-10-08T20:16:06Z-
dc.date.issued2013-01-14en_US
dc.identifier.citationWang, Yin, Nikodem, Michal, Wysocki, Gerard. (2013). Cryogen-free heterodyne-enhanced mid-infrared Faraday rotation spectrometer. Optics Express, 21 (1), 740 - 740. doi:10.1364/OE.21.000740en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr16c4m-
dc.description.abstractA new detection method for Faraday rotation spectra of paramagnetic molecular species is presented. Near shot-noise limited performance in the mid-infrared is demonstrated using a heterodyne enhanced Faraday rotation spectroscopy (H-FRS) system without any cryogenic cooling. Theoretical analysis is performed to estimate the ultimate sensitivity to polarization rotation for both heterodyne and conventional FRS. Sensing of nitric oxide (NO) has been performed with an H-FRS system based on thermoelectrically cooled 5.24 μm quantum cascade laser (QCL) and a mercury-cadmium-telluride photodetector. The QCL relative intensity noise that dominates at low frequencies is largely avoided by performing the heterodyne detection in radio frequency range. H-FRS exhibits a total noise level of only 3.7 times the fundamental shot noise. The achieved sensitivity to polarization rotation of 1.8 × 10-8 rad/Hz1/2 is only 5.6 times higher than the ultimate theoretical sensitivity limit estimated for this system. The path- and bandwidth-normalized NO detection limit of 3.1 ppbv-m/Hz1/2 was achieved using the R(17/2) transition of NO at 1906.73 cm-81.en_US
dc.format.extent740 - 740en_US
dc.language.isoen_USen_US
dc.relation.ispartofOptics Expressen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleCryogen-free heterodyne-enhanced mid-infrared Faraday rotation spectrometeren_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1364/OE.21.000740-
dc.date.eissued2013-01-07en_US
dc.identifier.eissn1094-4087-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

Files in This Item:
File Description SizeFormat 
Cryogen-free heterodyne-enhanced mid-infrared Faraday rotation spectrometer.pdf1.45 MBAdobe PDFView/Download


Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.