Space-qualified optical thin films by ion-beam-assisted deposition

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • C. N. Hsiao
  • H. P. Chen
  • P. K. Chiu
  • Y. W. Lin
  • F. Z. Chen

Detail(s)

Original languageEnglish
Pages (from-to)226-229
Journal / PublicationThin Solid Films
Volume529
Publication statusPublished - 1 Feb 2013
Externally publishedYes

Abstract

Optical interference coatings designed for use in a space-grade multispectral assembly in a complementary metal-oxide-semiconductor sensor were deposited on glass by ion-beam-assisted deposition for a Cassegrain-type space-based remote-sensing platform. The patterned multispectral assembly containing blue, green, red, near infrared, and panchromatic multilayer high/low alternated dielectric band-pass filter arrays in a single chip was fabricated by a mechanical mask and the photolithography process. The corresponding properties of the films were investigated by in situ optical monitoring and spectrometry. It was found that the optical properties were significantly improved by employing ion-beam-assisted deposition. The average transmittances were above 88% for the multispectral assembly, with a rejection transmittance of less than 1% in the spectral range 350-1100 nm. To estimate the optical stability of optical coatings for aerospace applications, a space environment assuming a satellite orbiting the Earth at an altitude of near 800 km was simulated by a Co60 gamma (γ) radiation test. © 2012 Elsevier B.V.

Research Area(s)

  • Band-pass filter, Ion-beam-assisted deposition, Multispectral assembly, Radiation test

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Space-qualified optical thin films by ion-beam-assisted deposition. / Hsiao, C. N.; Chen, H. P.; Chiu, P. K.; Lin, Y. W.; Chen, F. Z.; Tsai, D. P.

In: Thin Solid Films, Vol. 529, 01.02.2013, p. 226-229.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review