  We consider expansion, break off, and flight of 10 nm molybdenum film
deposited onto glass support. These events are initiated by action of
subpicosecond laser pulse onto film. Approximations for two-temperature
equation of state and electron--ion coupling parameter are developed. Heat
conduction is unimportant because film is ultrathin and because radius of a
laser beam is rather large $\sim 10$ $\mu$m (thus lateral thermal spreading is
insignificant at the considered time scale). We use two-temperature
one-dimensional hydrodynamic code to follow evolution of laser induced flow.
Additional code for treating transmission and reflection of a monochromatic
electromagnetic wave is developed. It is applied to describe interference
between transmitted and reflected waves in the layered structure appearing
thanks to laser induced expansion and separation of a film.

Mesoscale and Nanoscale Physics;Optics;Plasma Physics