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Conferences > CLEO_Europe > 2019 > ce_1 > ce_1_2
  • 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper ce_1_2

THz Spectroscopy of Photogenerated Carriers in Fe:LiNbO3 for Optical Control of 2D Materials

Sophie Blundell, Jon Gorecki, Nikitas Papasimakis, Sakellaris Mailis, and Vasilis Apostolopoulos

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Abstract

We report on significant photo-induced changes in the transmission of THz radiation through iron doped lithium niobate (Fe:LiNbO3). The effect is attributed to photo-excited charge carriers, originating from the Fe dopant energy levels in the band gap of the crystal. In previous work, we have demonstrated that Fe:LiNbO3 substrates allow control of graphene electronics and plasmonics through photo-induced electrostatic fields in the crystal [1]. THz time domain spectroscopy (TDS) measurements of Fe:LiNbO3 provide the means to calculate photoexcited charge carrier densities within the crystal, thereby providing further insight into Fe:LiNbO3 as a versatile platform for the transient photo-induced electrostatic doping of 2D materials.

© 2019 IEEE

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