Computer Science – Performance
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confefd07b&link_type=abstract
"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec
Computer Science
Performance
Mini-Symposium: Cavity Enhanced Spectroscopy
Scientific paper
Phase-shift CRD measurements were used to determine the optical loss in a variety of unusual optical cavities. Cavities were made of - loops of optical fibers, - circular channels containing a high refractive index liquid, - strands of single-mode fiber using Bragg gratings as "mirrors", - microresonator spheres made from silica and polydimethyl siloxane and, - silicon-on-insulator ``race track`` microresonators. These cavities were interfaced to (micro-)analytical separation systems such as microfluidic "labs-on-a-chip", capillary electrophoresis and high-performance liquid chromatography (HPLC). As the sample interacts with the cavity, the ring-down time is decreased and absorption detection of small liquid samples is possible. CRD measurements in waveguide cavities may also be extended to very sensitive refractive index measurements. By exploiting the response of long-period gratings and microresonators to refractive index changes, ppb-level chemical detection was carried out in water and air.
Barnes Jack
Bescherer Klaus
Brown Stephen
Crudden Cathleen M.
Litman Jessica
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