非線形光学結晶育成技術の現状と動向

摘要

Frequency conversion in nonlinear optical crystals is a key technology to expand the frequency region of laser from deep-ultraviolet to far-infrared. This review introduces advanced growth technologies for nonlinear optical crystals to generate ultraviolet light and terahertz wave. Effective stirring of growth solution and precise impurity control have enabled to produce high-quality crystals which possess high laser-induced damage tolerance. Laser-induced nucleation technique developed for growth of organic crystals is also described.