A new method for measuring electro-optical coefficients of the optically active crystals

摘要

A new method has been proposed to measure the electro-optical coefficients of the crystals which have optical activity. By using this method, the half-wave voltage and the electro-optical coefficients of the optically active crystals La3Ga5SiO14 (LGS), La3Ga5.5Nb0.5O14 (LGN), La3Ga5.5Ta0.5Si14 (LGT) have been determined. The resultants obtained are: gamma(11)(LGS) = 1.9 pm/V, gamma(11)(LGN) = 0.75 pm/V, gamma(11)(LGT) = 0.57 pm/V. This method can also be used to simulate the on-off state of the electro-optical Q switch in the laser cavity, whether the switch is made of the ordinary crystals or the optically active crystals. (C) 2004 Elsevier Ltd. All rights reserved.