Study on Growth Interface of Large Nd:YAG Crystals

A study was performed on the growth interface of a large-diameter 1 at% neodymium-doped yttrium aluminum garnet (Nd:YAG) single crystal grown using Czochralski method. Red parallel light and an orthogonal polarizing system were used to observe distribution central lateral cores at different interfaces. The solid–liquid Nd:YAG mainly determined via interaction between natural forced convection. shape controlled maintaining rotation rate temperature field. Interface inversion generally occurred during shoulder-expanding stage late stages cylindrical portion crystal. occurrence is directly related field, process parameters, diameter size area reduced adjusting gradient speed.