Carrier-envelope phase dependence in atomic ionization by short-laser pulses

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:267

Article; Proceedings Paper

Arbo, D. G.^1,2  Persson, E.²  Dimitriou, K. I.^3,4  Burgdoerfer, J.² 

[1] IAFE, Inst Astron & Space Phys, RA-1428 Buenos Aires, DF, Argentina

[2] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria

[3] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece

[4] Natl Hellen Res Fdn, Inst Theoret & Phys Chem, GR-11635 Athens, Greece

关键词: Carrier-envelope phase;    Short-laser pulse;    Angular momentum;   

DOI  :  10.1016/j.nimb.2008.10.044

来源: Elsevier

【 摘 要 】

In atomic ionization by few-cycle laser pulses doubly differential momentum distributions near-threshold exhibit a radial nodal structure that results from peaked partial-wave distributions near a particular angular momentum. We analyze the doubly differential momentum distribution for different carrier-envelope phases. We find that in the cases where the photoelectron reaches a minimum at threshold the angular momentum distribution is very sensitive to the CEP since small variations of the ponderomotive energy can lead to the opening or closing of a new channel. (c) 2008 Elsevier B.V. All rights reserved.

【 授权许可】

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