Optical activity along the optical axis of crystals with ordered langasite structure by Aijian Wei, Baolin Wang, Haifeng Qi, and Duorong Yuan

Crystal Research and Technology

Cryst. Res. Technol. 41, 371 (2006) - Abstract -

Optical activity along the optical axis of crystals with ordered langasite structure

Aijian Wei, Baolin Wang, Haifeng Qi, and Duorong Yuan*

School of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, China
*State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

Keywords	optical material, optical activity
PACS	78.20.Ek
DOI	10.1002/crat.200510589

Optical activity along the optical axis of four piezoelectric crystals Sr₃TaGa₃Si₂O₁₄ (STGS), Sr₃NbGa₃Si₂O₁₄ (SNGS), Ca₃TaGa₃Si₂O₁₄ (CTGS) and Ca₃NbGa₃Si₂O₁₄ (CNGS) with ordered langasite structure were studied via a convenient method. All the crystals investigated show unusually large values of the specific rotation.

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