Abstract
We analyze the elementary processes leading to the double ionization of D2 molecules by a single femtosecond intense laser pulse. From the total kinetic energy release of the two D+ ions which exhibits distinct peaks depending on the laser intensity, pulse length and mean wavelength, we show that the double ionization of D2 by a short femtosecond laser pulse can serve as a molecular clock. We discuss how to read such a clock correctly and how to choose laser parameters so the clock can be read more accurately.
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