Generation of intense supershort optical pulses using ultrafast molecular phase modulation

Summary form only given. We have demonstrated a new method of single extremely short intense pulse generation using ultrafast molecular phase modulation in a hollow waveguide filled with impulsively excited Raman active gas for a probe pulse shorter than the molecular vibrational period. A continuous phase control of the second delayed pulse has been performed by changing the delay of the pump and the probe pulse within the molecular vibrational period. In addition we would like to point out that the second delayed pulse can be at other wavelengths.