title: Pulse-off electro-optic Q-switch made of La3Ga5SiO14.
abstract: By theoretical calculations we search the hold-on and hold-off state of the pulse-off electro-optic (EO) Q-switch made of La3Ga5SiO14 (langasite, LGS) which exhibits both electro-optic (EO) effect and optical activity (OA), from which the proper applied voltage and orientation of LGS are determined. For the first time to our knowledge, a pulse-off EO Q-switch made of LGS is successfully designed and used in the Nd:YAG laser cavity. Q-switched pulses with energy 360 mJ and pulse width 8.3 ns are obtained, and the dynamic-static ratio is 80%.
authors.forename: Zhaojun
authors.initials: Z
authors.lastname: Liu
authors.forename: Qingpu
authors.initials: Q
authors.lastname: Wang
authors.forename: Xingyu
authors.initials: X
authors.lastname: Zhang
authors.forename: Zejin
authors.initials: Z
authors.lastname: Liu
authors.forename: Aijian
authors.initials: A
authors.lastname: Wei
authors.forename: Jun
authors.initials: J
authors.lastname: Chang
authors.forename: Fufang
authors.initials: F
authors.lastname: Su
authors.forename: Guofan
authors.initials: G
authors.lastname: Jin