Media 1: Green light direct writing of ferroelectric domains in Mg-doped LiNbO<sub>3</sub> ZhengShoujun KongYongfa ZhangRong LiuHongde ChenShaolin ZhangLing LiuShiguo RuppRomano XuJingjun 2014 Originally published in Optical Materials Express on 01 February 2014 (ome-4-2-272)