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  Actively coupled cavity ringdown spectroscopy with low-power broadband sources

Petermann, C., & Fischer, P. (2011). Actively coupled cavity ringdown spectroscopy with low-power broadband sources. Optics Express, 19(11), 10164-10173. doi:10.1364/OE.19.010164.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000B-0036-8 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-4A95-7
Genre: Journal Article

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OptExpress_19_2011_10164.pdf (Any fulltext), 644KB
 
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https://opg.optica.org/oe/fulltext.cfm?uri=oe-19-11-10164&id=213737 (Any fulltext)
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 Creators:
Petermann, Christian, Author
Fischer, Peer1, Author                 
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1Max Planck Institute for Medical Research, Max Planck Society, ou_1125545              

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 Abstract: We demonstrate a coupling scheme for cavity enhanced absorption spectroscopy that makes use of an intracavity acousto-optical modulator to actively switch light into (and out of) a resonator. This allows cavity ringdown spectroscopy (CRDS) to be implemented with broadband nonlaser light sources with spectral power densities of less than 30μW/nm. Although the acousto-optical element reduces the ultimate detection limit by introducing additional losses, it permits absorptivities to be measured with a high dynamic range, especially in lossy environments. Absorption measurements for the forbidden transition of gaseous oxygen in air at ∼760nm are presented using a low-coherence cw-superluminescent diode. The same setup was electronically configured to cover absorption losses from 1.8×10−8cm−1 to 7.5% per roundtrip. This could be of interest in process analytical applications.

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Language(s): eng - English
 Dates: 2011-04-292011-03-182011-04-292011-05-092011-05-23
 Publication Status: Issued
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1364/OE.19.010164
BibTex Citekey: ISI:000290852800014
URI: https://pubmed.ncbi.nlm.nih.gov/21643274/
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Title: Optics Express
  Abbreviation : Opt. Express
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 19 (11) Sequence Number: - Start / End Page: 10164 - 10173 Identifier: ISSN: 1094-4087
CoNE: https://pure.mpg.de/cone/journals/resource/954925609918