Units

Useful conversion factors between different units (handy to keep in mind):

Time and energy

Through the relation $E=h\nu$, one gets (assuming $h=1$) the following correspondence:

$1~\mathrm{meV}=1.5193~\mathrm{ps}^{-1}$

Constants

$h\approx6.62607\times10^{-34}\mathrm{J s}$

$h\approx4.13567\mathrm{\,meV\, ps}$