Two-photon excitation of the anti-Stokes photoluminescence of Ca1–x Er x F2 + x crystals
Crossref DOI link: https://doi.org/10.1134/S1063783417010103
Published Online: 2017-02-21
Published Print: 2017-01
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Gruzintsev, A. N.
Karimov, D. N.
License valid from 2017-01-01