Enhanced ionisation of polyatomic molecules in intense laser pulses is due to energy upshift and field coupling of multiple orbitals

Sonia Erattupuzha, Cody L. Covington, Arthur Russakoff, Erik Lötstedt, Seyedreza Larimian, Václav Hanus, Sergiy Bubin, Markus Koch, Stefanie Gräfe, Andrius Baltuška, Xinhua Xie, Kaoru Yamanouchi, Kálmán Varga, Markus Kitzler^*