Zobrazeno 1 - 10
of 13
pro vyhledávání: '"James J. Scherer"'
Publikováno v:
Optical Sensors and Sensing Congress (ES, FTS, HISE, Sensors).
A new, ultrasensitive lunchbox-sized middle infrared laser-based commercial gas sensor is described, with examples of monitoring key pullutants (CO, HCHO), greenhouse gases (CH4, N2O) with 1ppb accuracy levels in a variety of field applications. Comm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e76a678be2df74d5793bd3e4211ccf1
https://doi.org/10.1364/es.2019.etu2a.1
https://doi.org/10.1364/es.2019.etu2a.1
Publikováno v:
The Journal of Chemical Physics. 118:7863-7872
The gas-phase electronic absorption spectra of the naphthalene (C10H8+) and acenaphthene (C12H10+) cations have been measured in the visible range in a free jet planar expansion in an attempt to collect data in an astrophysically relevant environment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::525ca21d50202e61f5b34650f3d8fd11
https://doi.org/10.1063/1.1564044
https://doi.org/10.1063/1.1564044
Publikováno v:
Chemical Physics Letters. 307:343-349
A new approach is described in which continuous, narrow band laser sources are employed with the recently developed integrated cavity output spectroscopy technique to obtain sensitive, quantitative absorption spectra in a simple experimental configur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e127f6260b4105f277712832b5f6236
https://doi.org/10.1016/s0009-2614(99)00547-3
https://doi.org/10.1016/s0009-2614(99)00547-3
Autor:
James J. Scherer
Publikováno v:
Chemical Physics Letters. 292:143-153
A new technique is presented which enables high-resolution cavity ringdown spectra to be obtained over a relatively large spectral region on microsecond timescales. The ringdown spectral photography (RSP) technique employs two key principles to simul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dffb31118e78e1da1727f778aef2f0d1
https://doi.org/10.1016/s0009-2614(98)00653-8
https://doi.org/10.1016/s0009-2614(98)00653-8
Publikováno v:
Applied optics. 40(36)
A new technique that enables frequency-resolved cavity ringdown absorption spectra to be obtained over a large optical bandwidth by a single laser shot is described. The technique, ringdown spectral photography (RSP), simultaneously employs two key p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0558ed2f911b448c6df56c79749ad502
https://pubmed.ncbi.nlm.nih.gov/18364983
https://pubmed.ncbi.nlm.nih.gov/18364983
Publikováno v:
Digital Holography and Three-Dimensional Imaging.
Difference frequency generation lasers offer immediate access to the O-H, N-H and CH stretch region between 3-4 micron that is particularly suited for sensing of key greenhouse and other atmospheric trace gases. Article not available.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80be906113218ea1dd510baee4dd0e57
https://doi.org/10.1364/dh.2008.pdpjma13
https://doi.org/10.1364/dh.2008.pdpjma13
Publikováno v:
Fiber Lasers IV: Technology, Systems, and Applications.
Broadly tunable fiber laser system has been demonstrated at room temperature. The IR fiber laser system consists of two high peak power individual pulse fiber lasers and their difference frequency generation (DFG) in Periodically Poled Lithium Niobat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65fbeeef508356a6b73c197ef5ee7db8
https://doi.org/10.1117/12.696736
https://doi.org/10.1117/12.696736
Autor:
Janelle R. Anderson, Alfred Y. Cho, Federico Capasso, Anthony O'Keefe, L. B. Lapson, James J. Scherer, Joshua B. Paul, Claire F. Gmachl
Publikováno v:
SPIE Proceedings.
Although the ability of high finesse optical cavities to provide effective absorption path-lengths exceeding 10 km. has been known for quite some time, attempts to utilize this property for the purposes of high-resolution spectroscopy have often resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c25186467911874c5eacad101f85e11
https://doi.org/10.1117/12.455722
https://doi.org/10.1117/12.455722
Publikováno v:
Laser Applications to Chemical and Environmental Analysis.
An approach is described that enables continuous, narrow band laser sources to be used in conjunction with the recently developed integrated cavity output spectroscopy (ICOS) technique to obtain sensitive, quantitative absorption spectra.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5692d60cd5869b0e15cd5c8f69f14c4
https://doi.org/10.1364/lacea.2000.fd2
https://doi.org/10.1364/lacea.2000.fd2
Publikováno v:
Laser Applications to Chemical and Environmental Analysis.
Over the last decade there has been a significant increase in the implementation of cavity ringdown- based methods for spectroscopic studies in the gas phase[l]. Although these methods have demonstrated high sensitivity in numerous applications and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22b77f801de593594299f65635cc7c24
https://doi.org/10.1364/lacea.2000.fd3
https://doi.org/10.1364/lacea.2000.fd3