Weak and strong measurement of molecular rotation and mass

Mass-Correlated Rotational Alignment Spectroscopy (mass-CRASY) combines information from mass spectrometry with that from high-resolution rotational spectroscopy. It thereby allows the single-step characterization of multiple molecular species in heterogeneous or impure samples. The rotational structure is analyzed through the impulsive excitation of a coherent rotational wavepacket and the time-delayed probing thereof by resonant multi-photon ionization (a weak measurement). Resulting ion masses are characterized by mass spectrometry (a strong measurement). The talk will present examples for CRASY measurements and discuss the potential of correlated optical spectroscopy to resolve long-standing questions in the molecular sciences.