Signatures of tunneling and multiphoton ionization by short-laser pulses: The partial-wave distribution

We analyze the two-dimensional angular momentum-energy distribution of electrons emitted from argon by short laser pulses. We identify characteristic features of both multiphoton and tunneling ionization in the partial-wave distribution for Keldysh parameters close to unity. We observe a remarkable...

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Detalles Bibliográficos
Autores principales: Arbó, D.G., Lemell, C., Burgdörfer, J., Mendez L., Diaz C., Rabadan I., Garcia G., Martin F.
Formato: CONF
Materias:
Angular momentum
Argon lasers
Ionization
Laser pulses
Multiphoton processes
Photoionization
Energy dependent
Energy distributions
Keldysh parameter
Multiphoton ionization
Quantum-classical correspondence
Short laser pulse
Strong-field approximations
Tunneling ionization
Angular distribution
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17426588_v635_n1_p_Arbo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We analyze the two-dimensional angular momentum-energy distribution of electrons emitted from argon by short laser pulses. We identify characteristic features of both multiphoton and tunneling ionization in the partial-wave distribution for Keldysh parameters close to unity. We observe a remarkable degree of quantum-classical correspondence in the photoinization process which becomes even more pronounced after intensity averaging over the focal volume. We derive an energy-dependent cut-off for the highest angular momentum accessible within the framework of the strong-field approximation, which accurately reproduces the partial wave distributions found from solutions of the time-dependent Schrödinger equation. © 2015 IOP Publishing Ltd.

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