ИСТИНА

We present a versatile laser platform for time-resolved broadband 2D spectroscopy using ultrashort pulses in visible and mid-IR range. The Ti:Sapphire based laser source generates optically synchronized pulses in visible, near- and mid-infrared range with a duration of less than 60 fs and a wavelength tunable in the range of 0.4 – 10 μm. Additional pulse compression methods based on bulk materials and hollow photonic-crystal fibers are developed to decrease pulse duration up to single cycle, this broadband radiation then can be used to directly excite and/or probe electronic and vibrational degrees of freedom, which in combination with the heterodyne detection technique implemented in the mid-IR range, open up possibilities for studying ultrafast dynamics of molecular coherence, as well as ultrafast population kinetics and energy exchange between different degrees of freedom in a wide class of complex molecular systems.