Light Source for Low-Coherence Interferometry

0368144 - ÚPT 2012 RIV DE eng C - Conference Paper (international conference)
Buchta, Zdeněk - Mikel, Břetislav - Lazar, Josef - Číp, Ondřej
Light Source for Low-Coherence Interferometry.
Proceedings of the 20th IMEKO TC2 Symposium on Photonics in Measurement. Aachen: Shaker Verlag, 2011, s. 30-33. ISBN 978-3-8440-0058-0.
[IMEKO TC2 Symposium on Photonics in Measurement /20./. Linz (AT), 16.05.2011-18.05.2011]
R&D Projects: GA MŠMT(CZ) LC06007; GA MŠMT ED0017/01/01; GA MPO 2A-1TP1/127; GA ČR GP102/09/P293; GA ČR GP102/09/P630
Institutional research plan: CEZ:AV0Z20650511
Keywords : low-coherence interferometry * phase-crossing algorithm * white-light source * CCD camera
Subject RIV: BH - Optics, Masers, Lasers

We describe in this paper a pilot experiment of optimization of a white-light source for low-coherence interferometry. The white-light source combines the light beams generated with color LEDs. By modeling of the white light spectra, a contrast of a white light interference fringe could be changed and set to the maximal value. The optimized white light source is designed to be a crucial part of an experimental setup for surface diagnostics and automatic calibration of gauge blocks. This paper also describes the concept of the light source combining white-light beam and laser beam, based on fiber optics.
Permanent Link: http://hdl.handle.net/11104/0202574