大阪大学 · 物理学・天文学
Masashi Yoshimura教授の研究室では、非線形光学結晶の設計・開発に注力しており、特にレーザー光の周波数変換を実現するための高効率な結晶材料の創出を目的としています。YCOB系の固溶体を用いた非臨界位相一致による三次高調波発生の実現が主な研究テーマであり、Nd:YAGレーザーの可視光発生に応用可能な材料の最適化を進めています。
Figures are computed from collected data and may differ slightly.
A nonlinear optical crystal YCa(4)O(BO(3))(3) (YCOB) is phase matchable for third-harmonic generation (THG) of a Nd:YAG laser by type I mixing between 1.064 and 0.532mum . By partial substitution of Gd for Y in YCOB, a solid solution Gd(x)Y(1-x)Ca(4)O(BO(3))(3) gradually changes the phase-matching angles of THG to (theta, ø)=(90( degrees ), 90 ( degrees )) . We present the properties of noncritically phase-matched THG in Gd(x) Y(1-x)Ca(4)O(BO(3))(3) (x=0.28) .
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