Quantum optimal control of the isotope-selective rovibrational excitation of diatomic molecules

二原子分子の同位体選択的振動回転励起の量子最適制御

黒崎 譲*; 横山 啓一  

Kurosaki, Yuzuru*; Yokoyama, Keiichi

塩化リチウム分子の同位体選択的振動回転励起の最適パルス波形を求めた。振動回転が基底準位にあるLiCl-35とLiCl-37の混合分子集団にレーザーパルスを照射し、LiCl-35(=0, =0)とLiCl-37(=1, =1)を生成する最適波形を最適制御理論により計算した。その結果、回転遷移だけを利用する方が効率よく選択励起を起こすことができることが示された。

Electric field of laser pulses which gives maximum selectivity in the isotope-selective rovibrational excitation of lithium chloride molecules is calculated. Applying the optimal control theory, we calculate optimal electric field to produce mixture of LiCl-35 (=0, =0) and LiCl-37 (=1, =1) from molecular ensemble of LiCl-35 (=0, =0) and LiCl-37 (=0, =0). As a result, it is found that electric field which permit rotational excitations only gives high yield in the selective excitation compared to the electric field which permit both rotational and vibrational excitations.