Two-dimensional spectroscopy allows to study ultrafast phenomena in condensed phase samples. In its two most widespread variants, either electronic energy states are excited in the visible spectral range (2DES) or molecular vibrational states are excited in the MIR (2DIR). This technique records a signal emitted by the sample following its interaction with at least 2 pump pulses and a probe pulse, and provides two-dimensional spectra as a function of pump and probe frequencies.
Applications and Requirements
In order to capture ultrafast dynamics with a good temporal resolution, <100fs pulses are routinely used for 2DIR, while <20fs are common for 2DES.
- 2DES is a very powerful tool to understand the dynamics of photosynthesis and is a crucial tool to enhance current solar energy technologies.
- 2DIR is widely used in pharmaceutical studies.
- Recently, some combinations of these two techniques has even allowed to correlate electronic and nuclei dynamics (2DEV for two-dimensional electronic vibrational spectroscopy)
While Amplitude range of Ytterbium lasers, such as the SatsumaX and the Tangor100, coupled to Fastlite twinStarzz OPA are excellent candidates for this application, Fastlite Dazzler is a must-have for most setups since it drastically simplifies the generation of phase-locked pump pulses, as well as the control of delay and phase variation between them. In other words, the Dazzler immediately transform a simple pump/probe setup in a 2D spectroscopy setup.
