Abstract
SynopsisThe resonant enhanced multiphoton ionization (REMPI) of OCS molecules has been studied by tracing the electron energy shift with the laser intensity dependent photoelectron energy spectra. We find that two excited states (1Δ and 1Π) have been involved in the ionization of OCS at 800 nm and the REMPI through a certain excited state can be selectively controlled by varying the laser intensity. Furthermore, the REMPI of OCS through 4sσ Rydberg states at 400 nm laser fields has also been identified by angular distribution of electrons.
Highlights
4s Rydberg states at 400 nm laser fields has been identified by angular distribution of electron
We experimentally investigate ionization of OCS molecules in strong laser fields using velocity-map imaging
The laser pulses centered at 400 nm are generated by passing an 800 nm linear polarized pulse through a BBO crystal
Summary
4s Rydberg states at 400 nm laser fields has been identified by angular distribution of electron. We experimentally investigate ionization of OCS molecules in strong laser fields using velocity-map imaging.
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