The Vassar Ultrafast Optics Lab is located in the basement of Sanders Physics. It houses a lot of neat stuff, the fanciest of which is a Coherent Mira titanium sapphire laser that produces laser pulses that are less than a picosecond (one millionth of a millionth of a second) in duration. We use these ultrashort pulses to study very fast thermal and mechanical behavior in thin films, crystals, and nanostructured materials.