中赤外領域でのパルス波形整形技術の開発とその分子科学への応用

Laser pulse shaping in mid-infrared region and its application for molecular science

坪内 雅明; 百瀬 孝昌*

Tsubouchi, Masaaki; Momose, Takamasa*

波形整形は原子分子に対する量子制御に対する基本技術である。特に電子基底状態での分子振動回転波束の制御は、熱的化学反応の量子制御や量子ゲート操作を実現化するために注目されている。そのためには中赤外領域でのフェムト秒レーザー波形整形技術は必要不可欠である。本研究では中赤外領域での任意波形整形の実現とその波形の観測技術の開発について報告する。

Pulse shaping has been known as one of the essential technologies for coherent control of atoms and molecules. In particular, it has been recently suggested that the manipulation of molecular rovibrational wave packets in the ground electronic state may realize the coherent control of thermal chemical reactions or the quantum gate operation in quantum information processes. The femtosecond pulse shaping in the mid-infrared region is indispensable for this purpose, and has been developed continuously. In this presentation, we demonstrate the precise arbitrary pulse shaping and its characterization of mid-infrared radiation toward rovibrational wave packet manipulation. We have developed the cross-correlation frequency-resolved optical gating (XFROG) as a simple but convenient pulse characterization method in the mid-infrared region.