The DOI matches its Crossref record; 60 of the 60 references it cites were found in a registry or an index.
Optical properties of thin films monitored in real-time at high gamma radiation doses using long period fiber gratings
Open accessAbstract
In this work, we report an all-optical-fiber-based method to monitor in real-time the changes in thin film optical properties when exposed to harsh environments such as high doses of gamma radiation. The method is based on a long period grating (LPG) inscribed in a radiation resistant optical fiber, which is coated with a thin film to be analyzed. Due to impact of the environment on the film properties, the transmission spectrum of the LPG changes. To validate this methodology, we deposited oxides of various metals, i.e. aluminum (Al2O3), titanium (TiO2), and tantalum (Ta2O5), as well as a polymeric film, namely polystyrene (PS), on the LPG surface and measured the resonant wavelength shift induced by high doses of gamma exposure (dose rate of 2.3 kGy/h, up to a total dose of 46 kGy). The changes could be observed in real-time up to maximum reached dose and during the recovery period. The results are significantly dependent on thin film material. Among the oxides, TiO2 thin film demonstrated the highest susceptibility to irradiation, whereas Al2O3 exhibited the least impact. Additionally, a good recovery potential for Ta2O5 thin film was observed, hinting at its promising application in dosimetry. Conversely, the PS film exhibited a permanent effect induced by irradiation. This is the first real-time experimental study of the impact of high dose gamma radiation on thin film optical properties using a universal optical-fiber-based device. The findings pave the way for assessing radiation hardness of thin film materials or utilizing such a method to optimize material treatment involving ionizing radiation.
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Metadata
- Authors
- Esposito, F., Burnat, D., Mihalcea, R., Negut, D., Srivastava, A., Campopiano, S., Sansone, L., Giordano, M., Stancalie, A., Iadicicco, A., & Smietana, M.
- Affiliations
- Parthenope University of Naples (IT)
- Warsaw University of Technology (PL)
- National Institute for Laser Plasma and Radiation Physics (RO)
- National Research Council (IT)
- Corresponding author
- Iadicicco, Agostino
- Smietana, Mateusz
- ORCID
- Venue
- Optics & Laser Technology
- Publisher
- Elsevier BV
- Published
- 2024-09
- Volume
- 176
- Pages
- 111019
- ISSN
- 0030-3992 (ISSN-L)
- OpenAlex
- W4394784473
- Cited by
- 14
- References
- 60
- Citations by year
- 2026: 4 · 2025: 7 · 2024: 3
- FWCI
- 1.45
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Optics & Laser Technology (publishedVersion, cc-by)
- CINECA IRIS Institutial research information system (Parthenope University of Naples) (submittedVersion, cc-by-nc-nd)
- Funders
- Warsaw University of Technology
- UEFISCDI
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Fiber Optic Sensors
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic Crystal and Fiber Optics
- Physical Sciences › Physics and Astronomy › Radiation › Radiation Detection and Scintillator Technologies
- Keywords
- long-period fiber grating, gamma radiation, thin film optical properties, real-time monitoring, radiation dosimetry, radioresistance, metal oxides, titanium dioxide, alumina, tantalum pentoxide, polystyrene, resonance wavelength shift, fiber optic sensors, radiation-induced changes
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