The optical performance of anti-reflective coatings in iodine-filled absorption cells

0567493 - ÚPT 2023 RIV US eng C - Conference Paper (international conference)
Oulehla, Jindřich - Pokorný, Pavel - Hrabina, Jan - Holá, Miroslava - Číp, Ondřej
The optical performance of anti-reflective coatings in iodine-filled absorption cells.
22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics. Bellingham: SPIE, 2022 - (Masajada, J.; Urbańczyk, W.), Roč. 12502 (2022), č. článku 1250212. Proceedings of SPIE, 12502. ISBN 978-1-5106-6112-7. ISSN 0277-786X. E-ISSN 1996-756X.
[Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics /22./. Wojanów (PL), 05.09.2022-09.09.2022]
R&D Projects: GA TA ČR(CZ) TN01000008; GA TA ČR(CZ) FW03010687; GA TA ČR(CZ) FW01010379; GA MŠMT ED0017/01/01; GA MŠMT(CZ) LO1212; GA MŠMT(CZ) EF16_026/0008460
Institutional support: RVO:68081731
Keywords : optical coatings * PIAD * e-beam evaporation * thin films * iodine cells * laser spectroscopy
OECD category: Optics (including laser optics and quantum optics)
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12502/2664177/The-optical-performance-of-anti-reflective-coatings-in-iodine-filled/10.1117/12.2664177.short

We investigate the optical performance of anti-reflective coatings subject to high temperatures and the presence of iodine gas to determine the most suitable technological process for iodine-filled absorption cell production. Two unwanted effects need to be avoided or mitigated. One is the settling of iodine gas in the coating structure, which reduces the transmittance of the cell windows. The other is the thermally induced spectral shift which limits the effect of the antireflective coating. We investigate the thermal resistance of TiO2 and Ta2O5 based coatings produced by electron beam evaporation (e-beam) and plasma ion-assisted deposition (PIAD). We prepared sets of quartz samples subject to a range of temperatures and the presence of iodine gas. We show that the choice of the coating technique and annealing procedure can mitigate the aforementioned effects.
Permanent Link: https://hdl.handle.net/11104/0338750