Coherent 2D Microscopy (IMAGE) University of Würzburg Caption From bottom to top: Laser (oscillator), pulse shaper with generated four-pulse sequence, avalanche photodiode (APD) for detection, microscope objective (Obj), 2D material (MoSe2) with exciton (+/-) and oscillation (A1' phonon). Credit (Image: Donghai Li / University of Würzburg) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.