High-performance langasite (La3Ga5SiO14) electro-optic Q-switch

By cone-light interference method, the best langasite ( La3Ga5SiO14, LGS) crystal is chosen to make an electro-optic Q-switch. When the input energy is 28 J, the Q-switched output is 360 mJ. The stability is 0.45%; the dynamic–static ratio is 80.05%; and the total electric-optical conversion efficiency is 1.3%.