Ionization rates and harmonic generation for H interacting with laser pulses of lambda=1064 nm and peak intensities in the range 2x10(13)-2x10(14)W cm(-2)

Dionissopoulou, S; Mercouris, T; Nicolaides, CA

dc.contributor.author	Dionissopoulou, S	en
dc.contributor.author	Mercouris, T	en
dc.contributor.author	Nicolaides, CA	en
dc.date.accessioned	2014-03-01T01:45:09Z
dc.date.available	2014-03-01T01:45:09Z
dc.date.issued	1996	en
dc.identifier.issn	0953-4075	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24553
dc.subject.classification	Optics	en
dc.subject.classification	Physics, Atomic, Molecular & Chemical	en
dc.subject.other	ATOMIC-HYDROGEN	en
dc.subject.other	MULTIPHOTON PROCESSES	en
dc.subject.other	HIGH-FREQUENCY	en
dc.subject.other	FIELD	en
dc.subject.other	STABILIZATION	en
dc.title	Ionization rates and harmonic generation for H interacting with laser pulses of lambda=1064 nm and peak intensities in the range 2x10(13)-2x10(14)W cm(-2)	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	We applied the state-specific expansion approach (SSEA) to the solution of the time-dependent Schrodinger equation describing the interaction of H with laser pulses of lambda = 1064 nm and peak intensities I-0 = 2 x 10(13), 6 x 10(13), 1 x 10(14) and 2 x 10(14) W cm(-2), and computed ionization rates and high-order harmonic spectra. For the first three cases, our results are compared with those of Krause and co-workers (Krause J L, Schafer K J and Kulander K C 1992 Phys. Rev. A 45 4998) who employed the grid method. Whereas for I-0 = 1 x 10(14) W cm(-2) convergence difficulties were reported for the grid method, no such difficulties were found for the SSEA. Given this fact, we tackled the problem of computing the harmonic spectrum for I-0 = 2 x 10(14) W cm(-2), the most difficult case treated thus far. This spectrum shows a cut-off at the 65th harmonic (3.17 U-p + I-p) and an extended plateau containing low-intensity harmonics up to the 181st. The ionization rate is 1.7 x 10(13) s(-1) while at the end of the pulse 19.5% of the system is in the 1s ground state and 2.6% in the bound states up to n = 20, l = 19.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS	en
dc.identifier.isi	ISI:A1996VR25200028	en
dc.identifier.volume	29	en
dc.identifier.issue	20	en
dc.identifier.spage	4787	en
dc.identifier.epage	4794	en