http://www.cnr.it/ontology/cnr/individuo/prodotto/ID280735
Influence of generalized focusing of few-cycle Gaussian pulses in attosecond pulse generation (Articolo in rivista)
- Type
- Label
- Influence of generalized focusing of few-cycle Gaussian pulses in attosecond pulse generation (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1364/OE.21.024991 (literal)
- Alternative label
Karimi, E.ae , Altucci, C.ab, Tosa, V.c, Velotta, R.ab, Marrucci, L.ad (2013)
Influence of generalized focusing of few-cycle Gaussian pulses in attosecond pulse generation
in Optics express
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Karimi, E.ae , Altucci, C.ab, Tosa, V.c, Velotta, R.ab, Marrucci, L.ad (literal)
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- a Dipartimento di Fisica, Università di Napoli Federico II, Napoli, Italy
b Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia-CNISM, Napoli, Italy
c National Institute for R and D Isotopic and Molecular Technologies, Cluj-Napoca, Romania
d CNR-SPIN, Complesso Universitario di Monte S. Angelo, Napoli, Italy
e Department of Physics, University of Ottawa, Ottawa, ON, Canada (literal)
- Titolo
- Influence of generalized focusing of few-cycle Gaussian pulses in attosecond pulse generation (literal)
- Abstract
- In contrast to the case of quasi-monochromatic waves, a focused optical pulse in the few-cycle limit may exhibit two independent curved wavefronts, associated with phase and group retardations, respectively. Focusing optical elements will generally affect these two wavefronts differently, thus leading to very different behavior of the pulse near focus. As limiting cases, we consider an ideal diffractive lens introducing only phase retardations and a perfect non-dispersive refractive lens (or a curved mirror) introducing equal phase and group retardations. We study the resulting diffraction effects on the pulse, finding both strong deformations of the pulse shape and shifts in the spectrum. We then show how important these effects can be in highly nonlinear optics, by studying their role in attosecond pulse generation. In particular, the focusing effects are found to affect substantially the generation of isolated attosecond pulses in gases from few-cycle fundamental optical fields. © 2013 Optical Society of America. (literal)
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