Influence of external electric field on the optical spectra of LiNbO3:Nd3+ and LiNbO3:Cr3+ crystals

Alexander P. Skvortsov; A. M. Tveritinov; Vladimir A. Trepakov; K. Polgar; L. Jastrabic

doi:10.1117/12.229147

3 January 1996 Influence of external electric field on the optical spectra of LiNbO₃:Nd³⁺ and LiNbO₃:Cr³⁺ crystals

Alexander P. Skvortsov, A. M. Tveritinov, Vladimir A. Trepakov, K. Polgar, L. Jastrabic

Proceedings Volume 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions; (1996) https://doi.org/10.1117/12.229147
Event: Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare Earth and Transitional Ions, 1995, St. Petersburg, Russian Federation

Abstract

The effect of external electric field on the absorption spectra of LiNbO₃ crystals doped with Nd³⁺ and Cr³⁺ ions has been investigated at 77 K by means of sensitive modulation method. A linear Stark effect is observed on many lines of Nd³⁺ and on B-lines of Cr³⁺-centers in a field directed along the trigonal axis of the crystal. No field effect is observed in a field directed perpendicular to the trigonal axis. Such properties of the Stark effect show that the permanent dipole moments of Nd³⁺ and Cr³⁺ centers are oriented along the trigonal axis of the crystal. This confirms that the centers possess C₃ point symmetry. The quantitative characteristics of the field effect are determined.

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Alexander P. Skvortsov, A. M. Tveritinov, Vladimir A. Trepakov, K. Polgar, and L. Jastrabic "Influence of external electric field on the optical spectra of LiNbO₃:Nd³⁺ and LiNbO₃:Cr³⁺ crystals", Proc. SPIE 2706, Tenth Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transitional-Metal Ions, (3 January 1996); https://doi.org/10.1117/12.229147

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KEYWORDS

Crystals

Ions

Absorption

Crystal optics

Chromium

Modulation

Neodymium

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