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High harmonic generation spectroscopy via orbital angular momentum

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posted on 2023-11-30, 18:44 authored by Jan Troßand Carlos A. Trallero-Herrero
We present an experimental technique using orbital angular momentum (OAM) in a fundamental laser field to drive High Harmonic Generation (HHG). The mixing of beams with different OAM allows to generate two laser foci tightly spaced to study the phase and amplitude of HHG produced in diatomic nitrogen. Nitrogen is used as a well studied system to show the quality of OAM based HHG interferometry.

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