Line shapes in triple-resonance ionization spectroscopy

Citation
W. Nortershauser et al., Line shapes in triple-resonance ionization spectroscopy, APPL OPTICS, 39(30), 2000, pp. 5590-5600
Citations number
36
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
APPLIED OPTICS
ISSN journal
00036935 → ACNP
Volume
39
Issue
30
Year of publication
2000
Pages
5590 - 5600
Database
ISI
SICI code
0003-6935(20001020)39:30<5590:LSITIS>2.0.ZU;2-Z
Abstract
Line shapes in high-resolution triple-resonance ionization spectroscopy hav e been calculated and compared with experimental measurements on the 4s(2) S-1(0)-->4s4p P-1(1)-->4s4d(1)D(2)-->4snf(1)F(3)-->Ca+ system of calcium. C alculations based on the density matrix formalism integrated the fundamenta l equations over experimental atomic angular and velocity distributions and laser intensity profiles. The measurements reveal and confirm all predicte d structures arising from the complex coupling of four atomic states with t hree laser fields and the Doppler distribution of the atomic ensemble. Effe cts of different laser beam geometries on the line shapes have been investi gated. The agreement between calculated and experimental spectra is general ly good over a dynamic range of 10 orders of magnitude. Thus these calculat ions can accurately predict optical isotopic selectivity in multistep reson ance ionization, with a value of S-opt similar to 10(10) expected for detec tion of the ultratrace isotope Ca-41. (C) 2000 Optical Society of America. OCIS codes: 300.6210, 300.6320, 300.6350, 300.6300, 300.6410.