Počet záznamů: 1

Light source for low-coherence interferometry surface diagnostics

  1. 1.
    0366110 - UPT-D 2012 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
    Buchta, Zdeněk - Mikel, Břetislav - Řeřucha, Šimon - Lazar, Josef - Číp, Ondřej
    Light source for low-coherence interferometry surface diagnostics.
    International Conference on Applications of Optics and Photonics (Proceedings of SPIE Vol. 8001). Bellingham: SPIE, 2011, 80013E:1-7. ISBN 978-0-8194-8575-5.
    [International Conference on Applications of Optics and Photonics. Braga (PT), 03.05.2011-07.05.2011]
    Grant CEP: GA ČR GP102/09/P293; GA ČR GP102/09/P630; GA MPO 2A-1TP1/127; GA MŠk(CZ) LC06007; GA MŠk ED0017/01/01
    Výzkumný záměr: CEZ:AV0Z20650511
    Klíčová slova: low-coherence interferometry * high-luminescent LED * phase-crossing algorithm * optical fibre * gauge block
    Kód oboru RIV: BH - Optika, masery a lasery

    We describe in this paper a pilot experiment of optimization of a white-light source for a low-coherence interferometry. The white-light source combines the light beams generated with colour LEDs. By modelling of the white light spectra, a contrast of a white light interference fringe could be changed and set to the maximal value. The second part of this paper is a description of a white-light fringe analysis ensured with a low-cost colour CCD camera. The used detection technique employs a phase-crossing algorithm which identifies a zero optical path difference as the point where the phase difference between the red, green and blue part of the white-light interference fringe becomes equal to zero. The optimized white light source is designed to be a crucial part of an experimental setup for the surface diagnostics and automatic calibration of gauge blocks.
    Trvalý link: http://hdl.handle.net/11104/0201195