采用竖式布里奇曼法生长了若干优质的ф20×80 mm AsGaSe2单晶体。经过Ag2Se共存下退火的样品，其通光波段透过率几乎都达到反射极限。计算了Ⅰ型和Ⅱ型红外倍频器的角度调谐特性曲线，利用上述晶体制备了10.6 μm辐射的Ⅰ型相位匹配倍频器。在一台TEA CO2激光器的10.6 μm信频实验中测得相位匹配角为56.1°，接收角参数ΔΘ·L为1.04°·cm。

Several high quality crystals of AgGaSe2 have been grown utilizing the vertical Bridgman technique. Boule sizes were typically 20 mm in diameter and 80 mm long. The optical transmission of AgGaSe2 samples annealed in the presence of Ag2Se3 is essentially reflection-limited over most of its transmission ranges. Calculations were made of the angular tuning characteristics of infrared frequency doublers using type Ⅰ and type Ⅱ processes. The frequency doublers of 10. 6 μm radiation for type Ⅰ phase matching were built from these crystals. The phase matching angle measured experimentally is 56.1°, and the acceptance angle parameter ΔΘ·L is 1.04°·cm in a frequency doubling experiment of the 10.6 μm radiation from a TEA CO2 laser.