Laser pulse control of photofragmentation in DCl+: The effect of carrier envelope phase

The optically induced fragmentation of deuterium chloride ions (DCl+) has been investigated by solving coupled time dependent Schrödinger equations. We demonstrate that the branching ratio D+:Cl+ of competing reaction channels leading to either D+ or Cl+ can be controlled by up to a factor of 100 by means of the carrier envelope phase (CEP). This CEP effect depends on the wavelength, the intensity and on the chirp of the fs laser pulses.