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Nonlinear optical response and structural properties of MBE-grown Fe:ZnS films

Abstract

Fe-doped ZnS films of high optical quality were fabricated using vacuum vapor deposition. Preferential crystalline orientation and phase purity of the host ZnS films were increased by the addition of small amounts of Fe, and the spectral shape of the 2–4 μm absorption peak is maintained up to the highest concentration tested (9 at.%). However, Raman shifts of the Fe:ZnS films indicate the inclusion of disordered material at high Fe concentrations, and below-gap optical Kerr effect measurements show an increase in χ(3) correlated with this data. Nonlinear optical properties of the films were also measured using the Z-scan method at 532 nm, and saturable absorption of the Fe-based intraband levels at 2.94 μm was confirmed.
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Category

Academic article

Language

English

Author(s)

  • Stanislav Polyakov
  • Eric Andrew Karhu
  • Reza Zamiri
  • Charles Moisset
  • Konstantinos Iliopoulos
  • Per Erik Vullum
  • Ulf Lennart Østerberg
  • Ursula Gibson

Affiliation

  • SINTEF Industry / Materials and Nanotechnology
  • Royal Institute of Technology
  • Aix-Marseille University
  • National Center for Scientific Research
  • Norwegian University of Science and Technology

Year

2018

Published in

Optical Materials Express

Volume

8

Issue

2

Page(s)

356 - 367

View this publication at Norwegian Research Information Repository