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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 18 — Jun. 20, 2008
  • pp: 3289–3298

Isotope selective near-resonant two-photon ionization of Ca 41 isotope via the 4 s 11 s S 0 1 intermediate state

M. Sankari  »View Author Affiliations

Applied Optics, Vol. 47, Issue 18, pp. 3289-3298 (2008)

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Isotope selective excitation of a Ca 41 isotope using a near-resonant two-photon ionization scheme 4 s 2 S 0 1 422.7924 nm , 413.3685 nm 4 s 11 s S 0 1 514.5 nm Ca + has been proposed for using the Ca 41 isotope in applications as a tracer in biomedical studies. The ionization efficiency and optical selectivity have been calculated for various powers of the excitation and ionization laser. Under the optimized excitation and ionization laser powers the ionization efficiency for the studied scheme is found to be 1.7 × 10 4 . The optical selectivity value is 1.0 × 10 5 and both of these values are either comparable or slightly better than the earlier published work by our group. The overall ionization efficiency for the two-photon ionization scheme considering the throughput factor is 5 × 10 3 , which is 2 orders of magnitude higher than the stepwise excitation process. Therefore, the higher ionization efficiency of the process enables monitoring of the tracer isotope for longer durations. In combination with a mass spectrometer, an abundance sensitivity of 10 10 can be obtained, which is adequate for biomedical applications.

© 2008 Optical Society of America

OCIS Codes
(020.3260) Atomic and molecular physics : Isotope shifts
(020.3690) Atomic and molecular physics : Line shapes and shifts
(300.6210) Spectroscopy : Spectroscopy, atomic

ToC Category:
Atomic and Molecular Physics

Original Manuscript: August 9, 2007
Revised Manuscript: March 13, 2008
Manuscript Accepted: March 24, 2008
Published: June 12, 2008

Virtual Issues
Vol. 3, Iss. 7 Virtual Journal for Biomedical Optics

M. Sankari, "Isotope selective near-resonant two-photon ionization of 41Ca isotope via the 4s11s 1S0 intermediate state," Appl. Opt. 47, 3289-3298 (2008)

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  1. D. Fink, J. Klein, and R. Middleton, “41Ca: past, present and future,” Nucl. Instrum. Methods Phys. Res. 52B, 572-582(1990). [CrossRef]
  2. R. R. Johnson, D. Berkovits, E. Boaretto, Z. Gelbart, S. Gehlberg, O. Meiray, M. Paul, V. Sossi, and E. Venezel, “Calcium resorption from bone in a human studied by 41Ca tracing,” Nucl. Instrum. Methods Phys. Res. B 92, 483-488(1994). [CrossRef]
  3. S. P. H. T. Freeman, J. C. King, N. E. Vieira, L. R. Woodhouse, and A. L. Yergey, “Human calcium metabolism including bone resorption measured with 41Ca tracer,” Nucl. Instrum. Methods Phys. Res. B 123, 266-270 (1997). [CrossRef]
  4. B. A. Bushaw, W. Nortershauser, and K. Wendt, “Lineshapes and optical selectivity in high resolution double resonance ionization mass spectrometry,” Spectrochim. Acta B 54, 321-332 (1999). [CrossRef]
  5. W. Nortershauser, B. A. Bushaw, P. Muller, and K. Wendt, “Lineshapes in triple resonance ionization spetroscopy,” Appl. Opt. 39, 5590-5600 (2000). [CrossRef]
  6. W. D. Brandon, W. R. Garrett, C. H. Chen, S. L. Allman, and M. G. Payne, “Experimental verification of a simple method to avoid isotopic bisases resulting from hyperfine structure in resonant ionization mass spectroscopy,” Spectrochim. Acta B 49, 1057-1066 (1994). [CrossRef]
  7. M. G. Payne, S. L. Allman, and J. E. Parks, “Effect of hyperfine structure on ionization efficiencies in stepwise ionization using broad bandwidth lasers,” Spectrochim. Acta B 46, 1439-1457 (1991). [CrossRef]
  8. P. A. Bokhan, D. E. Zakrevskii, and N. V. Fateev, “Selective photochemical isotope burning upon the interaction of resonant laser radiation with atoms,” JETP Lett. 75, 170-173(2002). [CrossRef]
  9. R. L. Kurucz and B. Bell, 1995 Atomic Line Data Kurucz CD-ROM No. 23, Cambridge (Smithsonian Astrophysical Observatory, 1995).
  10. R. L. Kurucz, 1988 Transactions of the International Astronomical Union, XXB, M. McNally, ed. (Dorschedt: Kluwer, 1966) pp. 168-172.
  11. W. L. Wiese, M. W. Smith, and B. M. Glennon, “Atomic transition probabilities, elements hydrogen through neon,” NSRDS-NBS 4 (Government Printing Office, 1966), p. 153.
  12. J. C. Camparo and P. Lambropoulos, “Stark shift of a two-photon transition induced by a model stochastic field,” J. Opt. Soc. Am. B 9, 2163-2170 (1992). [CrossRef]
  13. B. W. Shore, The Theory of Coherent Atomic Excitation (Wiley, 1990).
  14. T. Rickes, J. P. Marangos, and T. Halfmann, “Enhancement of third-harmonic generation by stark-chiped rapid adiabatic passage,” Opt. Commun. 227, 133-142 (2003). [CrossRef]
  15. T. Halfmann, T. Rickes, N. V. Vitanov, and K. Bergmann, “Lineshapes in coherent two-photon excitation,” Opt. Commun. 220, 353-359 (2003). [CrossRef]
  16. P. V. Kirankumar, M. Sankari, and M. V. Suryanarayana, “Isotope selective near-resonant two-photon ionization of calcium isotopes,” J. Phys. D: Appl. Phys. 40, 288-293(2007). [CrossRef]
  17. C. J. Lorenzen, K.Niemax, and L. R. Pendrill, “Isotope shifts of energy levels in the naturally abundant isotopes of strontium and calcium,” Phys. Rev. A 28, 2051-2058 (1983). [CrossRef]
  18. W. Nortershauser, N. Trautmann, K. Wendt, and B. A. Bushaw, Spectrochim. Acta B 53, 709-721 (1998). [CrossRef]

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