Continuous spectra in high-harmonic generation driven by multicycle laser pulses

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Holgado, W (Autor) Outra; Hernández-García, C (Autor) Outra; Alonso, B (Autor) Outra; Miranda, M (Autor) Outra; Silva, F (Autor) Outra; Plaja, L (Autor) Outra; Crespo, H (Autor) FCUP; Sola, IJ (Autor) Outra

Revista

Título: Physical Review A - Atomic, Molecular, and Optical Physics

Vol. 93

ISSN: 1050-2947

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 12 Citações

Scopus - 12 Citações

Outras Informações

ID Authenticus: P-00K-04H

DOI: 10.1103/physreva.93.013816

Abstract (EN): We present observations of the emission of XUV continua in the 20-37-eV region by high-harmonic generation with 4-7-fs pulses focused onto a Kr gas jet. The underlying mechanism relies on coherent control of the relative delays and phases between individually generated attosecond pulses, achievable by adjusting the chirp of the driving pulses and the interaction geometry. Under adequate negative chirp and phase-matching conditions, the resulting interpulse interference yields a continuum XUV spectrum, which is due to both microscopic and macroscopic (propagation) contributions. This technique opens the route for modifying the phase of individual attosecond pulses and for the coherent synthesis of XUV continua from multicycle driving laser pulses without the need of an isolated attosecond burst.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6