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Title: Anomalous laser deflection phenomenon based on the interaction of electro-optic and graded refractivity effects in Cu-doped KTa{sub 1−x}Nb{sub x}O{sub 3} crystal

An abnormal laser deflection phenomenon in a copper-doped KTa{sub 1−x}Nb{sub x}O{sub 3} (Cu:KTN) crystal is demonstrated in this Letter. A near-50 mrad beam deflection angle was observed when a voltage of 1.2 kV was applied to a Cu:KTN block with size of 2.8 mm × 1.2 mm × 7.5 mm at room temperature. The special features of this deflection phenomenon are that the laser beam deflection direction is perpendicular to the electric field direction, and the beam deflection angle remains unchanged when the electric field direction is reversed. The operating principle of the phenomenon is investigated and the origin of the deflection phenomenon is attributed to an interaction between the graded refractivity effect and the quadratic electro-optic effect of the crystal.
Authors:
; ; ; ;  [1] ; ;  [2] ; ;  [3]
  1. New Materials Institute, Shandong Academy of Sciences, Jinan 250014 (China)
  2. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083 (China)
  3. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China)
Publication Date:
OSTI Identifier:
22314484
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COPPER; CRYSTALS; DOPED MATERIALS; ELECTRIC FIELDS; LASERS; NIOBIUM COMPOUNDS; OXYGEN COMPOUNDS; POTASSIUM COMPOUNDS; REFRACTIVE INDEX; TANTALUM COMPOUNDS