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cond-mat.mtrl-sci2026
Optical Spectroscopy of Waveguide coupled Er ensembles in CaWO and YVO
Fabian Becker, Anna Selzer, Lorenz J. J. Sauerzopf +4
We present an optical study of near-surface Er ensembles in waveguide-integrated CaWO and YVO, investigating how nanophotonic coupling modifies rare-earth spectrosco…
cond-mat.mtrl-sci2025
Zeeman Spectroscopy of Vacancy-Charge-Compensated Er3+ Sites in CaWO4 under Vector Magnetic Fields
Fabian Becker, Sudip KC, Lorenz J. J. Sauerzopf +4
We present polarization-resolved optical absorption measurements on Er3+ ions in CaWO4 under vector magnetic fields, focusing on charge-compensated sites arising from local Ca2+ va…