Self-mixing interference effects in tunable diode laser absorption spectroscopy

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dc.contributor.authorMasiyano, Dackson-
dc.contributor.authorHodgkinson, Jane-
dc.contributor.authorSchilt, S.-
dc.contributor.authorTatam, Ralph P.-
dc.date.accessioned2011-04-14T23:22:29Z
dc.date.available2011-04-14T23:22:29Z
dc.date.issued2009-09-01T00:00:00Z-
dc.description.abstractWe report the effects of self-mixing interference on gas detection using tunable diode laser spectroscopy. For very weak feedback, the laser diode output intensity gains a sinusoidal modulation analogous to that caused by low finesse etalons in the optical path. Our experiments show that self-mixing interference can arise from both specular reflections (e.g. cell windows) and diffuse reflections (e.g. Spectralon™ and retroreflective tape), potentially in a wider range of circumstances than etalon-induced interference. The form and magnitude of the modulation is shown to agree with theory. We have quantified the effect of these spurious signals on methane detection using wavelength modulation spectroscopy and discuss the implications for real gas detectoren_UK
dc.identifier.citationD. Masiyano, J. Hodgkinson, S. Schilt and R. P. Tatam, Self-mixing interference effects in tunable diode laser absorption spectroscopy, Applied Physics B: Lasers and Optics, Volume 96, Number 4 / September, 2009, pp863-874en_UK
dc.identifier.issn0946-2171-
dc.identifier.urihttp://dx.doi.org/10.1007/s00340-009-3690-x-
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/3882
dc.language.isoen_UKen_UK
dc.publisherSpringer Science Business Mediaen_UK
dc.titleSelf-mixing interference effects in tunable diode laser absorption spectroscopyen_UK
dc.typeArticleen_UK

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