Temporal pulse shaping effects on aluminium and boron ablation plumes generated by ultrashort pulsed laser ablation and analyzed by time- and space-resolved optical spectroscopy

► Time- and space-resolved emission spectroscopy of femtosecond laser ablation plume of aluminium and boron. ► Temporal shaping of femtosecond laser pulses influence on plasma plume. ► Increasing pulse duration or double pulses delay rises ionization rate of aluminium plasma particularly with long pulses. ► Double pulses enhance ionization of aluminium plasma by shielding of the second pulse. ► Increasing pulse duration or double pulses delay decreases boron nanoparticle amount especially with double pulses.