Capturing fleeting changes in “nanoscale light”—femtosecond nano-imaging reveals ultrafast optical control of phonon polaritonMarine Le Bouar10d agoIn this study, researchers developed an ultrafast infrared near-field optical microscopy technique that combines nanoscale spatial resolution and an approximately 150-femtosecond temporal resolution with a spectral resolution of about 10 cm⁻¹.nanoscalenear-field-opticsopticsphysicsultrafast-optics
