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Probing Laser Induced Space Charge Fields with Rare Earth Dopants

  • Hosanna Odhner (a1) (a2), Greg Stone (a1) and Volkmar Dierolf (a1)

Abstract

Spectral shifts of the emission lines of Erbium ions in Lithium Niobate are used to determine the build-up of intrinsic electric fields under intense light irradiation. The observed spectral shifts can be translated into internal electric fields through a calibration using applied external fields. The studies show that a substantial field can be created locally (up to 150kV/mm) with observed occasional electric breakthroughs that have a corresponding field strength of up to 35kV/mm. In addition, a modification of some Erbium incorporation sites is observed suggesting its relationship with a defect that can by photo-ionized, such as Fe2+/Fe3+.

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1. Dierolf, V., Sandmann, C., J. Lumin 125, 6779 (2007).
2. Dierolf, V., Chapter 6 in Micro/nano engineering and characterization of ferroelectric crystals for applications in photonics (ed. by Ferraro, P., Grilli, S., and De Natale, P., Springer, 2009).
3. Stone, G, Knorr, B, Gopalan, V, Dierolf, V. Physical Review B 84(13), 134303 (2011).

Keywords

Probing Laser Induced Space Charge Fields with Rare Earth Dopants

  • Hosanna Odhner (a1) (a2), Greg Stone (a1) and Volkmar Dierolf (a1)

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