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

Journal Article · Mon Aug 04 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4892663· OSTI ID:22314484

Wang, Xuping; Liu, Bing; Yang, Yuguo; Zhang, Yuanyuan; Lv, Xianshun ^[1]; Hong, Guanglie; Shu, Rong ^[2]; Yu, Haohai; Wang, Jiyang ^[3]

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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)

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.

• OSTI ID: 22314484
• Journal Information: Applied Physics Letters, Vol. 105, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COPPER
CRYSTALS
DOPED MATERIALS
ELECTRIC FIELDS
LASERS
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
REFRACTIVE INDEX
TANTALUM COMPOUNDS