Photoelectric Crystals are a class of functional materials with exceptional photoelectric properties, widely used in laser technology, optical modulation, sensors, and communication systems. These crystals enable efficient conversation between light and electricity, offering high sensitivity, fast response, and excellent stability. Common photoelectric crystals include Lithium Niobate (LiNbO3), Lithium Tantalate (LiTaO3), and Potassium Titanyl Phosphate (KTP).