Time-domain spectroscopy of KTiOPO4 in the frequency range 0.6 - 7.0 THz
Mølster, Kjell Martin; Sørgård, Trygve; Laurell, Hugo; Canalias, Carlota; Pasiskevicius, Valdas; Laurell, Fredrik; Österberg, Ulf Lennart
Journal article, Peer reviewed
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Date
2019Metadata
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Abstract
We report on THz time-domain spectroscopy measurements of flux grownKTiOPO4in the frequency range 0.6–7.0 THz (20 to 240 cm−1). Our results compare well with earlierRaman and far-infrared measurements. We theorize that the differences between the opticalphonon mode resonances reported in the literature are due to what growth parameters and meltcompositions are used to grow the crystals. We also report on a new feature at 1.4 THz (47 cm−1)