On the interpretation of image spectrograms in some metrological applications |
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| Authors: | J P Goedgebuer J C Vienot |
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| Institution: | The authors are at the Laboratoire de Physique Générale et Optique, Associé au CNRS 214, Faculté des Sciences, 25030 Besançon Cedex, France |
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| Abstract: | The channelled spectrum phenomenon combined with a white-light imaging method yields image spectrograms giving access, under special conditions, to absolute path differences in a wide range of measurements (from one micron to several millimetres). Their interpretation is discussed through several applications: optical mapping, measurement of longitudinal displacement, evaluation of temperature and visualization of gas flow. |
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| Keywords: | interferometry spectroscopy spectrum analysers |
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