#Music goes terahertz
“#Music goes terahertz” A strong light pulse (white) can turn the saturable absorber (gold grating) into a nearly perfect mirror. Background photo: magnified view of a quantum cascade laser (center part of the silver area). Credit: Juergen Raab, Universitaet Regensburg. Use only for reporting on this study. An international research team from Germany, Italy, and…