Coherent Optical Transient Effects of the Spin-Rotation Interaction inC13H3F

Photon-echo interference damping and anomalous coherent Raman beats are observed due to the spin-rotation interaction from laser-excited vibration-rotation transitions in ${}_{}{}^{13}{}_{}{}^{}\mathrm{C}$ ${\mathrm{H}}_3$F at 9.6μm. Pulsed Stark fields superimposed upon a constant magnetic field control the intrinsic mixture of spin-rotation states. The spin-rotation interaction for spin $I=\frac{1}{2}$ is confirmed from photon-echo measurement and theory.