Selection rules for angular momentum transfer via impulsive stimulated Raman scattering
Takuya Higuchi, Hiroharu Tamaru, Makoto Kuwata‐Gonokami
Impulsive stimulated Raman scattering (ISRS) plays a key role in coherent control of low-energy rotational resonances. Femtosecond laser pulses are widely employed to utilize ISRS because they are broadband and can cover the needed frequencies in a single pulse. Here, we show theoretically that the ISRS process is expressed as a linear response to the instantaneous Stokes parameters (ISPs) of the laser pulse. These IPSs expressed in rotational coordinates are then shown to be responsible for the angular momentum transfer from light to matter. These relationships have led to the designs of spectral profiles and polarization states of light pulses that should selectively excite particular rotational modes.
Physical Review A•Jan 9, 2013•11 citations