Generation of attosecond pulses in macroscopic media

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 56, Issue 6, 1997, Pages 4960-4969

  Antoine, Philippe ^a,b   Milošević, Dejan B ^a,c   L’Huillier, Anne ^d   Gaarde, Mette B ^d,e   Salières, Pascal ^b   Lewenstein, Maciej ^b  

^a UNIVERSITÉ CATHOLIQUE DE LOUVAIN   (Belgium)

^b CEA SACLAY   (France)

^c UNIVERSITY OF SARAJEVO   (Bosnia and Herzegovina)

^d LUND INSTITUTE OF TECHNOLOGY   (Sweden)

^e UNIVERSITY OF COPENHAGEN   (Denmark)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 4243803604     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.56.4960     Document Type: Article

References (28)

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9. This idea has also been discussed by P. Salières, Ph.D. thesis, Université Paris VI, 1995;also P. Salières, A. L’Huillier, Ph. Antoine, and M. Lewenstein, Adv. At., Mol., Opt. Phys. (to be published).
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23. It is worth stressing at this point that both the saddle-point approximation with respect to the momentum used in Eq. (1), and the use of (Formula presented) states may introduce errors to our theory. In fact our approach reproduces quite accurately the form of the harmonic spectrum for noble gas atoms, but underestimates the numbers of photons emitted. Direct comparison of our results with the numerical solutions of the time-dependent Schrödinger equation indicates that our theory predicts typically photon numbers smaller by a factor 5–10 [see Ph. Antoine, B. Piraux, D. B. Milošević, and M. Gajda, Laser Phys. 7, 3 (1997). LAPHEJ
24. In D. B. Milošević and B. Piraux, Phys. Rev. A 54, 1522 (1996) it was checked that the next-order correction to the saddle-point approximation is of the order 10% and therefore it is not a critical one. We believe that the discrepancy between the strong-field approximation model and the numerical solutions of the time-dependent Schrödinger equation is mainly due to the Coulomb corrections to the dipole matrix element. PLRAANTherefore we plan to improve the strong-field approximation model by including these corrections [Ph. Antoine, D. B. Milošević, and B. Piraux (private communication)].
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