Since its first implementation in 2006, in fluorescence detected Fourier transform excitation spectroscopy of rubidium atoms, phase modulation is being increasingly used in nonlinear spectroscopy. Some of the important features of the technique are the excitation spectroscopy using signals that are relevant to photoactive devices (fluorescence and photocurrent), prospect of nonlinear spectroscopy of isolated systems such as single quantum dots or molecules, multidimensional spectroscopy, investigation of higher order recombination processes in semiconductors, etc. Although most of applications of phase modulated light fields have been on nonlinear spectroscopy in the perturbative regime, few efforts have been made recently to use it in the nonperturbative regime. In this review, we discuss the development of the technique since its inception, recent advances and future applications in strong field laser–matter interactions.
- Ultrafast spectroscopy
- phase modulation
- nonlinear processes
- high-order harmonic generation