Abstract

We have devised a simple new scheme to increase the isotopic selectivity in optical rare-isotope detection experiments. We can effectively remove interfering isotopes from an atomic beam by optically pumping them into a state that is invisible to the optical detection system. The selectivity of this resonant depletion scales exponentially with the isotope shift and yields almost unlimited selectivity in principle. We have demonstrated a selectivity of 2.3 × 105 with a single laser excitation in a beam of metastable krypton atoms. With better laser stability we may be able to improve the selectivity much further.

© 1989 Optical Society of America

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References

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  1. G. S. Hurst, M. G. Payne, S. D. Kramer, J. P. Young, Rev. Mod. Phys. 51, 767 (1979).
    [CrossRef]
  2. B. D. Cannon, B. A. Bushaw, T. J. Whitaker, J. Opt. Soc. Am. B 2, 1542 (1985).
    [CrossRef]
  3. C. E. Moore, Atomic Energy Levels (National Bureau of Standards, Gaithersburg, Md., 1971), Vol. II.
  4. D. W. Fahey, W. F. Parks, L. D. Schearer, J. Phys. E 13, 381 (1980).
    [CrossRef]
  5. M. Aymar, M. Coulombe, At. Data Nucl. Data Tables 21, 537 (1978).
    [CrossRef]
  6. F. B. Dunning, T. B. Cook, W. P. West, R. F. Stebbings, Rev. Sci. Instrum. 46, 1072 (1975).
    [CrossRef]
  7. B. A. Bushaw, B. D. Cannon, G. K. Gerke, T. J. Whitaker, Opt. Lett. 11, 422 (1986).
    [CrossRef] [PubMed]
  8. D. A. Jackson, J. Opt. Soc. Am. 69, 503 (1979).
    [CrossRef]
  9. B. Dahmani, L. Hollberg, R. Drullinger, Opt. Lett. 12, 876 (1987).
    [CrossRef] [PubMed]
  10. B. D. Cannon, T. J. Whitaker, Appl. Phys. B 38, 57 (1985).
    [CrossRef]
  11. E. B. Norman, S. B. Gazes, D. A. Bennett, Phys. Rev. Lett. 58, 1403 (1987).
    [CrossRef] [PubMed]

1987 (2)

B. Dahmani, L. Hollberg, R. Drullinger, Opt. Lett. 12, 876 (1987).
[CrossRef] [PubMed]

E. B. Norman, S. B. Gazes, D. A. Bennett, Phys. Rev. Lett. 58, 1403 (1987).
[CrossRef] [PubMed]

1986 (1)

1985 (2)

1980 (1)

D. W. Fahey, W. F. Parks, L. D. Schearer, J. Phys. E 13, 381 (1980).
[CrossRef]

1979 (2)

D. A. Jackson, J. Opt. Soc. Am. 69, 503 (1979).
[CrossRef]

G. S. Hurst, M. G. Payne, S. D. Kramer, J. P. Young, Rev. Mod. Phys. 51, 767 (1979).
[CrossRef]

1978 (1)

M. Aymar, M. Coulombe, At. Data Nucl. Data Tables 21, 537 (1978).
[CrossRef]

1975 (1)

F. B. Dunning, T. B. Cook, W. P. West, R. F. Stebbings, Rev. Sci. Instrum. 46, 1072 (1975).
[CrossRef]

Aymar, M.

M. Aymar, M. Coulombe, At. Data Nucl. Data Tables 21, 537 (1978).
[CrossRef]

Bennett, D. A.

E. B. Norman, S. B. Gazes, D. A. Bennett, Phys. Rev. Lett. 58, 1403 (1987).
[CrossRef] [PubMed]

Bushaw, B. A.

Cannon, B. D.

Cook, T. B.

F. B. Dunning, T. B. Cook, W. P. West, R. F. Stebbings, Rev. Sci. Instrum. 46, 1072 (1975).
[CrossRef]

Coulombe, M.

M. Aymar, M. Coulombe, At. Data Nucl. Data Tables 21, 537 (1978).
[CrossRef]

Dahmani, B.

Drullinger, R.

Dunning, F. B.

F. B. Dunning, T. B. Cook, W. P. West, R. F. Stebbings, Rev. Sci. Instrum. 46, 1072 (1975).
[CrossRef]

Fahey, D. W.

D. W. Fahey, W. F. Parks, L. D. Schearer, J. Phys. E 13, 381 (1980).
[CrossRef]

Gazes, S. B.

E. B. Norman, S. B. Gazes, D. A. Bennett, Phys. Rev. Lett. 58, 1403 (1987).
[CrossRef] [PubMed]

Gerke, G. K.

Hollberg, L.

Hurst, G. S.

G. S. Hurst, M. G. Payne, S. D. Kramer, J. P. Young, Rev. Mod. Phys. 51, 767 (1979).
[CrossRef]

Jackson, D. A.

Kramer, S. D.

G. S. Hurst, M. G. Payne, S. D. Kramer, J. P. Young, Rev. Mod. Phys. 51, 767 (1979).
[CrossRef]

Moore, C. E.

C. E. Moore, Atomic Energy Levels (National Bureau of Standards, Gaithersburg, Md., 1971), Vol. II.

Norman, E. B.

E. B. Norman, S. B. Gazes, D. A. Bennett, Phys. Rev. Lett. 58, 1403 (1987).
[CrossRef] [PubMed]

Parks, W. F.

D. W. Fahey, W. F. Parks, L. D. Schearer, J. Phys. E 13, 381 (1980).
[CrossRef]

Payne, M. G.

G. S. Hurst, M. G. Payne, S. D. Kramer, J. P. Young, Rev. Mod. Phys. 51, 767 (1979).
[CrossRef]

Schearer, L. D.

D. W. Fahey, W. F. Parks, L. D. Schearer, J. Phys. E 13, 381 (1980).
[CrossRef]

Stebbings, R. F.

F. B. Dunning, T. B. Cook, W. P. West, R. F. Stebbings, Rev. Sci. Instrum. 46, 1072 (1975).
[CrossRef]

West, W. P.

F. B. Dunning, T. B. Cook, W. P. West, R. F. Stebbings, Rev. Sci. Instrum. 46, 1072 (1975).
[CrossRef]

Whitaker, T. J.

Young, J. P.

G. S. Hurst, M. G. Payne, S. D. Kramer, J. P. Young, Rev. Mod. Phys. 51, 767 (1979).
[CrossRef]

Appl. Phys. B (1)

B. D. Cannon, T. J. Whitaker, Appl. Phys. B 38, 57 (1985).
[CrossRef]

At. Data Nucl. Data Tables (1)

M. Aymar, M. Coulombe, At. Data Nucl. Data Tables 21, 537 (1978).
[CrossRef]

J. Opt. Soc. Am. (1)

J. Opt. Soc. Am. B (1)

J. Phys. E (1)

D. W. Fahey, W. F. Parks, L. D. Schearer, J. Phys. E 13, 381 (1980).
[CrossRef]

Opt. Lett. (2)

Phys. Rev. Lett. (1)

E. B. Norman, S. B. Gazes, D. A. Bennett, Phys. Rev. Lett. 58, 1403 (1987).
[CrossRef] [PubMed]

Rev. Mod. Phys. (1)

G. S. Hurst, M. G. Payne, S. D. Kramer, J. P. Young, Rev. Mod. Phys. 51, 767 (1979).
[CrossRef]

Rev. Sci. Instrum. (1)

F. B. Dunning, T. B. Cook, W. P. West, R. F. Stebbings, Rev. Sci. Instrum. 46, 1072 (1975).
[CrossRef]

Other (1)

C. E. Moore, Atomic Energy Levels (National Bureau of Standards, Gaithersburg, Md., 1971), Vol. II.

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Figures (4)

Fig. 1
Fig. 1

Generalized atomic-level scheme for resonant depletion spectroscopy.

Fig. 2
Fig. 2

Atomic levels of krypton and the laser wavelengths used in our experiment. The levels are labeled using Paschen notation3 and do not signify angular momentum in the usual way.

Fig. 3
Fig. 3

Schematic of the apparatus. BS, Beam splitter.

Fig. 4
Fig. 4

Depletion of krypton isotopes 84 and 86 as a function of laser frequency. These scans were accumulated for 10 sec/channel with a frequency step of 1 MHz. The origin of the frequency scale is the 1s5–2p8 depletion resonance of lisotope 84.

Equations (4)

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σ 1 = exp ( αRt ) exp ( C ) .
S = exp [ αt R A ( 1 R B / R A ) ] .
ln S = D ln T ,
S = exp ( D ) .

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