【摘要】 采用竖式布里奇曼法生长了若干优质的ф２０×８０ｍｍＡｓＧａＳｅ２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１０．６μｍ辐射的Ⅰ型相位匹配倍频器。在一台ＴＥＡＣＯ２激光器的１０．６μｍ信频实验中测得相位匹配角为５６．１°，接收角参数△θ·Ｌ为１．０４°·ｃｍ。更多还原

【Abstract】 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 frequeney doubling experiment of the 10. 6μm radiation from a TEA CO2 laser.更多还原