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Emeric Balogh
초강력 레이저과학 연구단
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Dynamic wavefront rotation in the attosecond lighthouse

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Title
Dynamic wavefront rotation in the attosecond lighthouse
Author(s)
Emeric Balogh; Zhang C.; Ruchon T.; Hergott J.-F.; Quere F.; Corkum P.; Chang Hee Nam; Kyung Taec Kim
Publication Date
2017-01
Journal
OPTICA, v.4, no.1, pp.48 - 53
Abstract
Attosecond pulses propagating in different directions, generated in a rotating wavefront of a driving laser field, can provide a source of multiple isolated attosecond pulses. Clear spatial separation of the attosecond pulses is attained if the divergence of the individual attosecond pulse is smaller than their angular separation, which is limited by the bandwidth of the driving laser pulse. Here we demonstrate both experimentally and numerically that an additional wavefront rotation is imposed during the propagation of the driving laser pulse in a highly ionizing medium. This dynamic wavefront rotation enables the generation of the isolated attosecond pulse even in the case when the conditions derived from a linear diffraction theory do not permit the angular separation. The described nonlinear phenomenon has its roots in the half-cycle ionization events, and may open up new ways to study strong field processes in highly ionizing media. © 2017 Optical Society of America
URI
https://pr.ibs.re.kr/handle/8788114/3362
ISSN
2334-2536
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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