Effects of ultraviolet solar photons on thin-film optical filters for space applications

Angela Piegari, Salvatore Scaglione, Danilo Zola, Angelo Giglia, Stefano Nannarone

Research output: Contribution to conferencePaper

Abstract

Ultraviolet solar photons could induce some variation in the performance of optical coatings exposed to solar irradiation. Consequently optical components and instruments containing such coatings can suffer performance degradation in the space environment. The effects of ultraviolet solar photons on the transmittance of single layer coatings and optical filters, has been investigated. The beamline of a synchrotron light source was used for the irradiation test, being the irradiance in the ultraviolet region comparable to the solar spectrum. Some changes induced by such irradiation are detected in silicon dioxide, which shows an increased absorption below 350 nm. On the contrary, hafnium oxide characteristics seem unaffected. Narrow-band filters containing both these materials show a reduction of transmission in the passband.
Original languageEnglish
DOIs
Publication statusPublished - 2015
Event17th Italian Conference on Photonics Technologies, Fotonica AEIT 2015 - Turin, Italy
Duration: 1 Jan 2015 → …

Conference

Conference17th Italian Conference on Photonics Technologies, Fotonica AEIT 2015
CountryItaly
CityTurin
Period1/1/15 → …

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Piegari, A., Scaglione, S., Zola, D., Giglia, A., & Nannarone, S. (2015). Effects of ultraviolet solar photons on thin-film optical filters for space applications. Paper presented at 17th Italian Conference on Photonics Technologies, Fotonica AEIT 2015, Turin, Italy. https://doi.org/10.1049/cp.2015.0128