Femtosecond laser in gauge block calibration

0426198 - ÚPT 2015 BG eng C - Konferenční příspěvek (zahraniční konf.)
Buchta, Zdeněk - Čížek, Martin - Hucl, Václav - Řeřucha, Šimon - Šarbort, Martin - Lazar, Josef - Číp, Ondřej
Femtosecond laser in gauge block calibration.
21th annual International Conference on Advanced Laser Technologies ALT´13. Montenegro: University of Montenegro, 2013.
[ALT´13. Annual International Conference on Advanced Laser Technologies /21./. Budva (ME), 16.09.2013-20.09.2013]
Grant CEP: GA ČR GP102/09/P293; GA ČR GPP102/11/P819; GA ČR GAP102/10/1813; GA MPO FR-TI2/705; GA TA ČR(CZ) TA03010663; GA MŠMT ED0017/01/01; GA MŠMT(CZ) LC06007
Institucionální podpora: RVO:68081731
Klíčová slova: Femtosecond laser * calibration cell
Kód oboru RIV: BH - Optika, masery a lasery

This paper deals with using of mode-lock femtosecond laser for length measurement of gauge blocks. A novel principle for contactless gauge block measurement using a combination of low-coherence interferometry and laser interferometry is presented here. The experimental setup combines a Dowell interferometer and a Michelson interferometer to ensure a gauge block length determination with direct traceability to the primary length standard. This setup was designed for contactless complex gauge block analysis providing information about gauge block length, gauge block faces surface profile (e.g., indication of scratches) and by analysis of the interference fringes shape, also about the gauge block edge flatness distortion. The designed setup is supplemented by an automatic handling system designed for a set of 126 gauge blocks (0.5 to 100 mm) to allow the automatic contactless calibration of the complex gauge block set without a human operator.
Trvalý link: http://hdl.handle.net/11104/0235669