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Diode laser absorption spectroscopy of lithium isotopes

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Abstract

We study Doppler-limited laser intensity absorption, in a thermal lithium vapor containing 7Li and 6Li atoms in a 9 to 1 ratio, using a narrow-linewidth single-longitudinal-mode tunable external cavity diode laser at the wavelength of 670.8 nm. The lithium vapor was embedded in helium or argon buffer gas. The spectral lineshapes were rigorously predicted for \(D_1\) and \(D_2\) for the lithium 6 and 7 isotope lines using reduced optical Bloch equations, specifically derived, from a density matrix analysis. Here, a detailed comparison is provided of the predicted lineshapes with the measured 7Li-\(D_2\), 7Li-\(D_1\), 6Li-\(D_2\) and 6Li-\(D_1\) lines, in the case of high vapor density and with intensity above the saturation intensity. To our knowledge, this is the first time that such detailed comparison is reported in the open literature. The calculations were also extended to saturated absorption spectra and compared to measured Doppler-free 7Li-\(D_2\) and 6Li-\(D_2\) hyperfine lines.

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References

  1. P. Siddons, C.S. Adams, C. Ge, I.G. Hughes, J. Phys. B: At. Mol. Opt. Phys. 41, 1–10 (2008)

    Article  Google Scholar 

  2. P. Siddons, C.S. Adams, I.G. Hughes, J. Phys. B: At. Mol. Opt. Phys. 42, 1–6 (2009)

    Article  Google Scholar 

  3. I.E. Olivares, A.E. Duarte, T. Lokajczyk, A. Dinklage, F.J. Duarte, J. Opt. Soc. Am. B 15, 1932–1939 (1998)

    Article  ADS  Google Scholar 

  4. I.E. Olivares, J. Opt. Soc. Am. B 30, 945–949 (2013)

    Article  ADS  Google Scholar 

  5. A. Dinklage, T. Lokajczyk, H.-J. Kunze, B. Schweer, I.E. Olivares, Rev. Sci. Instrum. 69, 321–322 (1998)

    Article  ADS  Google Scholar 

  6. E. Arimondo, Prog. Opt. 35, 257 (1996)

    Article  Google Scholar 

  7. S.E. Harris, Phys. Today 50, 36–42 (1997)

    Article  Google Scholar 

  8. I.E. Olivares, A.E. Duarte, Appl. Opt. 38, 7481–7485 (1999)

    Article  ADS  Google Scholar 

  9. I.E. Olivares, A.E. Duarte, E.A. Saravia, F.J. Duarte, Appl. Opt. 41, 2973–2977 (2002)

    Article  ADS  Google Scholar 

  10. T. Arisawa, Y. Maruyama, Y. Suzuki, K. Shiba, Appl. Phys. B 28, 73–76 (1982)

    Article  ADS  Google Scholar 

  11. F.J. Duarte, J.A. Piper, Appl. Opt. 23, 1391–1394 (1984)

    Article  ADS  Google Scholar 

  12. W. Demtröder, Laser Spectroscopy: Basic Concepts and Instrumentation, 2nd edn. (Springer, Berlin, 1998)

    Google Scholar 

  13. P. Zorabedian, Tunable Lasers Handbook (F. J. Duarte Academic, New York, 1995) Chap. 8

  14. F.J. Duarte, Tunable Laser Applications, 2nd ed. (F. J. Duarte, CRC, New York, 2009) Chap. 5

  15. D. Das, V. Natarajan, Phys. Rev. A 75, 1–10 (2007)

    Google Scholar 

  16. C.J. Sansonetti, B. Richou, R. Engleman Jr., L.J. Radziemski, Phys. Rev. A 52, 2682–2688 (1995)

    Article  ADS  Google Scholar 

  17. R.D. Cowan, The Theory of Atomic Structure Spectra (R. D. Cowan, U. California Press, Berkeley, 1981) Chap. 6

  18. W. Happer, Rev. Mod. Phys. 44, 169–249 (1972)

    Article  ADS  Google Scholar 

  19. J.R. Ackerhalt, B.W. Shore, Phys. Rev. A 16, 277–282 (1997)

    Article  ADS  Google Scholar 

Download references

Acknowledgments

We thank Project DICYT041431OB, from the Vicerrectoría de Investigación, Desarrollo e Innovación, Universidad de Santiago de Chile, for funding these experiments.

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Authors and Affiliations

  1. Departamento de Física, Universidad de Santiago de Chile, Avenida Ecuador 3493, Estación Central, 9170124, Santiago, Chile

    Ignacio E. Olivares & Iván A. González

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  1. Ignacio E. Olivares
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  2. Iván A. González
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Correspondence to Ignacio E. Olivares.

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Olivares, I.E., González, I.A. Diode laser absorption spectroscopy of lithium isotopes. Appl. Phys. B 122, 252 (2016). https://doi.org/10.1007/s00340-016-6528-3

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  • DOI: https://doi.org/10.1007/s00340-016-6528-3

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