We report the interaction of isotopically labeled nitrous oxide ((NNO)-N-15-N-14-O-16) time-of-flight mass spectroscopy. The phase dependence of two-body fragmentation channels for linear and circular polarization reveals that the nitrogen-nitrogen bond fission channel is in accordance with the 'selective ionization of oriented molecules' mechanism, while the nitrogen-oxygen bond rupture involves an electron recollision mechanism. For the three-body-fragmentation channel resulting in N-14(3+) ions it is demonstrated that it may proceed via a concerted and/or a sequential manner. The phase dependence of the sequential channel is indicative of the following dissociation route: (NNO)-N-15-N-14-O-16 (->) (NNO)-N-15-N-14-O-16 -> (NNO)-N-15-N-14-O-16. (C) 2016 Elsevier B.V. All rights reserved.