[OPTICAL REVIEW Vol. 11, No. 5 (2004) 328-331]
© 2004 The Optical Society of Japan

Mutual Action of Optical Activity and Electro-Optic Effect and Its Influence on the Electro-Optic Q-switch

Yin XIN*, Zhang SHAOJUN and Wang JIYANG

State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, P. R. China

(Received May 26, 2004; Accepted July 25, 2004)

In this paper, we have studied the mutual action of the optical activity and the electro-optic effect, and its influence on the electro-optic Q-switch. The birefringence (g33/n0)(Δ/n0)2 resulting from the mutual action is calculated. In the polarization light interferometric experiment setup, the outgoing light intensity expression is given by I=A02cos2{[(π/λ)(g33/n0)l-β]+(π/λ)[(-2Δ)+(g33/n0)(Δ/n0)2]l}, for the optically active crystal on which the voltage is applied.
We discuss the influence on the turn-off and turn-on states of the Q-switch caused by the mutual action term (g33/n0)(Δ/n0)2, and the advantage and disadvantage of the two work-manners of the Q-switch (i.e., step-up manner and step-down manner). The synthetic properties of La3Ga5SiQ14 electro-optic Q-switch are described in comparison to KD2PO4 and LiNbO3 Q-switches.

Key words: optical activity, electro-optic property, electro-optic Q-switch, La3Ga5SiQ14 single crystal

*E-mail address: yinxin@icm.sdu.edu.cn