Growth and Frequency Doubling Characters of Heavily Doped Mg:LiNbO sub 3 Crystals

摘要

By determining the relations between the effective distribution coefficient of MgO in the congruent LiNbO sub 3 and the phase-matching temperature and the concentration of MgO, chemical composition which makes the Mg:LiNbO sub 3 to get the highest phase-matching temperature has been found. The problems frequently encountered in heavily doped Mg:LiNbO sub 3 crystal growth, such as growth striations and precipitation etc., have been resolved. The Mg:LiNbO sub 3 crystals with high resistance to light-induced refractive index changes and good optical quality have been grown. Using the crystals for frequency doubling of a continuously pumped acousto-optical Q-switch Nd:YAG laser, second harmonic output wih the highest average power of 2 W have been obtained. (ERA citation 09:018811)