0587447 - ÚPT 2025 RIV US eng J - Journal Article
Řeřucha, Šimon - Holá, Miroslava - Oulehla, Jindřich - Lazar, Josef - Mikel, Břetislav - Číp, Ondřej
Thermally compensated common-path differential interferometer with reduced long-term zero-drifts.
Measurement Science and Technology. Roč. 35, č. 9 (2024), č. článku 095021. ISSN 0957-0233. E-ISSN 1361-6501
R&D Projects: GA TA ČR(CZ) FW03010687; GA TA ČR(CZ) TN02000020; GA MŠMT ED0017/01/01; GA MŠMT(CZ) LO1212; GA MŠMT(CZ) EF16_026/0008460; GA MŠMT EH22_008/0004649
Institutional support: RVO:68081731
Keywords : laser interferometer * differential interferometer * dimensional metrology * thermal drifts * zero-drift compensation * long-term stability
OECD category: Electrical and electronic engineering
Impact factor: 2.7, year: 2023 ; AIS: 0.45, rok: 2023
Method of publishing: Open access
Result website:
https://iopscience.iop.org/article/10.1088/1361-6501/ad48a5DOI: https://doi.org/10.1088/1361-6501/ad48a5

Laser interferometers have served as the workhorses in the metrology of length for several decades. Their broader application brings further challenges, especially for longer measurement time-frames or outside the laboratory environment with strictly controlled conditions. As a part of our team's activities aiming at characterizing and eliminating the effects of unstable temperature on interferometric length measurements, we report on successfully remodelling a differential interferometer's optical arrangement focused on increasing resilience against temperature changes. The experimental characterization under constant temperature and subsequently under thermal load proved a tenfold decrease in short-term fluctuations and reduced sensitivity to temperature changes by a factor of 100.
Permanent Link: https://hdl.handle.net/11104/0354653