Use ofdiffraction-f ree beams to generate low-order harmonics in xenon jets has been investigated. Nearly diffractionless beams have been generated from a Ti : sapphire, 100 fs, laser system by focussing ring-type radiation, which has been produced in two different ways: either, by inserting an annular slit into the incident Gaussian beam, or by placing a doublet of axicons in a vertex-to-vertex configuration before the focussing lens. The results obtained with the first scheme are discussed and interpreted in terms ofa simple perturbative model ofthe harmonic generation (HG) process. The first measurements performed with the doublet of axicons are also reported and discussed.

Diffractionless beams and their use for harmonic generation

ALTUCCI, CARLO;BRUZZESE, RICCARDO;DE LISIO, CORRADO;SOLIMENO, SALVATORE;
2002

Abstract

Use ofdiffraction-f ree beams to generate low-order harmonics in xenon jets has been investigated. Nearly diffractionless beams have been generated from a Ti : sapphire, 100 fs, laser system by focussing ring-type radiation, which has been produced in two different ways: either, by inserting an annular slit into the incident Gaussian beam, or by placing a doublet of axicons in a vertex-to-vertex configuration before the focussing lens. The results obtained with the first scheme are discussed and interpreted in terms ofa simple perturbative model ofthe harmonic generation (HG) process. The first measurements performed with the doublet of axicons are also reported and discussed.
File in questo prodotto:
File Dimensione Formato  
oleconi02.pdf

non disponibili

Tipologia: Documento in Post-print
Licenza: Accesso privato/ristretto
Dimensione 186.88 kB
Formato Adobe PDF
186.88 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/614
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 15
social impact