| Summary: | A quantum theory of intense-field pump-probe experiments proposed recently, which successfully described the highorderharmonic generation (HHG) signals of adiabatic and non-adiabatic aligned molecules, is applied here toinvestigate the HHG signals from molecules aligned by using switched-off schema. The results are presented in the twoexternally available control parameters: the delay time, td, between the pump and the probe pulse, and the relative angle,α, between their polarizations. To provide more succinct and clearer information of the beats involved in the signal, thesignal is also presented in the frequency domain. The results show that the HHG signals of switched-off alignedmolecules mimic those of the adiabatic and non adiabatic aligned molecules, and therefore, it can be used to determinesome molecular properties, as powerful as non-adiabatic signal. In addition, the HHG signals of switched-off alignedmolecules also have benefit, which is it gives a greater modulation depth.
|
|---|
