Show simple item record

dc.contributor.authorDong, Lei
Yu, Yajun
Li, Chunguang
So, Stephen
Tittel, Frank K.
dc.date.accessioned 2015-10-30T15:40:40Z
dc.date.available 2015-10-30T15:40:40Z
dc.date.issued 2015
dc.identifier.citation Dong, Lei, Yu, Yajun, Li, Chunguang, et al.. "Ppb-level formaldehyde detection using a CW room-temperature interband cascade laser and a miniature dense pattern multipass gas cell." Optics Express, 23, no. 15 (2015) The Optical Society: 19821-19830. http://dx.doi.org/10.1364/OE.23.019821.
dc.identifier.urihttps://hdl.handle.net/1911/82000
dc.description.abstract A ppb-level formaldehyde (H2CO) sensor was developed using a thermoelectrically cooled (TEC), continuous-wave (CW) room temperature interband cascade laser (ICL) emitting at 3.59 μm and a miniature dense pattern multipass gas cell with >50 m optical path length. Performance of the sensor was investigated with two measurement schemes: direct absorption (DAS) and wavelength modulation spectroscopy (WMS). With an integration time of less than 1.5 second, a detection limit of ~3 ppbv for H2CO measurement with precision of 1.25 ppbv for DAS and 0.58 ppbv for WMS, respectively, was achieved without zero air based background subtraction. An Allan-Werle variance analysis indicated that the precisions can be further improved to 0.26 ppbv @ 300s for DAS and 69 pptv @ 90 s for WMS, respectively. A side-by-side comparison between two measurement schemes is also discussed in detail.
dc.language.iso eng
dc.publisher The Optical Society
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.title Ppb-level formaldehyde detection using a CW room-temperature interband cascade laser and a miniature dense pattern multipass gas cell
dc.type Journal article
dc.contributor.funder National Natural Science Foundation of China
dc.contributor.funder National Science Foundation
dc.contributor.funder Welch Foundation
dc.citation.journalTitle Optics Express
dc.citation.volumeNumber 23
dc.citation.issueNumber 15
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1364/OE.23.019821
dc.identifier.grantID 61275213 (National Natural Science Foundation of China)
dc.identifier.grantID 61108030 (National Natural Science Foundation of China)
dc.identifier.grantID ERC MIRTHE (National Science Foundation)
dc.identifier.grantID C-0586 (Welch Foundation)
dc.identifier.grantID IIP-1230427 (National Science Foundation)
dc.type.publication publisher version
dc.citation.firstpage 19821
dc.citation.lastpage 19830


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record