Abstract

A process is discussed which could lead to laser oscillation in the uv, employing vibrational energy levels in different electronic states of a diatomic molecule. A pulse from a Lyman discharge tube is passed through AgCl vapor. Absorption and subsequent fluorescence occur and analysis of the resulting output pulse, together with previously measured values of the lifetimes involved, enable the populations of eight vibrational energy levels to be computed. No inversion is found to occur between the two electronic states but inversions 5 × 109 mol/cm3 are found to occur between pairs of vibrational levels in the same electronic state.

© 1967 Optical Society of America

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References

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  1. W. R. Bennett, Appl. Opt. Suppl. 1, 24 (1962).
    [CrossRef]
  2. P. A. Bazhulin, I. N. Knyazev, G. G. Petrash, Soviet Phys.–JETP 22, 11 (1966).
  3. A. L. Schawlow, C. H. Townes, Phys. Rev. 112, 1940 (1958).
    [CrossRef]
  4. S. Jacobs, G. Gould, P. Rabinowitz, Phys. Rev. Letters 7, 415 (1961).
    [CrossRef]
  5. T. H. Maiman, Nature 187, 493 (1960).
    [CrossRef]
  6. H. G. Heard, Nature 200, 667 (1963).
    [CrossRef]
  7. W. B. Bridges, A. N. Chester, Appl. Opt. 4, 573 (1965).
    [CrossRef]
  8. J. Franck, H. G. Kuhn, Z. Physik 43, 164 (1927).
    [CrossRef]
  9. J. Franck, H. G. Kuhn, Z. Physik 44, 607 (1927).
    [CrossRef]
  10. B. A. Brice, Phys. Rev. 35, 960 (1930).
    [CrossRef]
  11. J. Kelley, U.S. Bureau of Mines Bull. 383(1935).
  12. F. A. Jenkins, G. D. Rochester, Phys. Rev. 52, 1141 (1937).
    [CrossRef]
  13. J. E. R. Wheaton, Appl. Opt. 3, 1247 (1964).
    [CrossRef]
  14. J. N. Murrell, The Theory of Electronic Spectra of Organic Molecules (Methuen, London, 1963).

1966 (1)

P. A. Bazhulin, I. N. Knyazev, G. G. Petrash, Soviet Phys.–JETP 22, 11 (1966).

1965 (1)

1964 (1)

1963 (1)

H. G. Heard, Nature 200, 667 (1963).
[CrossRef]

1962 (1)

W. R. Bennett, Appl. Opt. Suppl. 1, 24 (1962).
[CrossRef]

1961 (1)

S. Jacobs, G. Gould, P. Rabinowitz, Phys. Rev. Letters 7, 415 (1961).
[CrossRef]

1960 (1)

T. H. Maiman, Nature 187, 493 (1960).
[CrossRef]

1958 (1)

A. L. Schawlow, C. H. Townes, Phys. Rev. 112, 1940 (1958).
[CrossRef]

1937 (1)

F. A. Jenkins, G. D. Rochester, Phys. Rev. 52, 1141 (1937).
[CrossRef]

1935 (1)

J. Kelley, U.S. Bureau of Mines Bull. 383(1935).

1930 (1)

B. A. Brice, Phys. Rev. 35, 960 (1930).
[CrossRef]

1927 (2)

J. Franck, H. G. Kuhn, Z. Physik 43, 164 (1927).
[CrossRef]

J. Franck, H. G. Kuhn, Z. Physik 44, 607 (1927).
[CrossRef]

Bazhulin, P. A.

P. A. Bazhulin, I. N. Knyazev, G. G. Petrash, Soviet Phys.–JETP 22, 11 (1966).

Bennett, W. R.

W. R. Bennett, Appl. Opt. Suppl. 1, 24 (1962).
[CrossRef]

Brice, B. A.

B. A. Brice, Phys. Rev. 35, 960 (1930).
[CrossRef]

Bridges, W. B.

Chester, A. N.

Franck, J.

J. Franck, H. G. Kuhn, Z. Physik 43, 164 (1927).
[CrossRef]

J. Franck, H. G. Kuhn, Z. Physik 44, 607 (1927).
[CrossRef]

Gould, G.

S. Jacobs, G. Gould, P. Rabinowitz, Phys. Rev. Letters 7, 415 (1961).
[CrossRef]

Heard, H. G.

H. G. Heard, Nature 200, 667 (1963).
[CrossRef]

Jacobs, S.

S. Jacobs, G. Gould, P. Rabinowitz, Phys. Rev. Letters 7, 415 (1961).
[CrossRef]

Jenkins, F. A.

F. A. Jenkins, G. D. Rochester, Phys. Rev. 52, 1141 (1937).
[CrossRef]

Kelley, J.

J. Kelley, U.S. Bureau of Mines Bull. 383(1935).

Knyazev, I. N.

P. A. Bazhulin, I. N. Knyazev, G. G. Petrash, Soviet Phys.–JETP 22, 11 (1966).

Kuhn, H. G.

J. Franck, H. G. Kuhn, Z. Physik 43, 164 (1927).
[CrossRef]

J. Franck, H. G. Kuhn, Z. Physik 44, 607 (1927).
[CrossRef]

Maiman, T. H.

T. H. Maiman, Nature 187, 493 (1960).
[CrossRef]

Murrell, J. N.

J. N. Murrell, The Theory of Electronic Spectra of Organic Molecules (Methuen, London, 1963).

Petrash, G. G.

P. A. Bazhulin, I. N. Knyazev, G. G. Petrash, Soviet Phys.–JETP 22, 11 (1966).

Rabinowitz, P.

S. Jacobs, G. Gould, P. Rabinowitz, Phys. Rev. Letters 7, 415 (1961).
[CrossRef]

Rochester, G. D.

F. A. Jenkins, G. D. Rochester, Phys. Rev. 52, 1141 (1937).
[CrossRef]

Schawlow, A. L.

A. L. Schawlow, C. H. Townes, Phys. Rev. 112, 1940 (1958).
[CrossRef]

Townes, C. H.

A. L. Schawlow, C. H. Townes, Phys. Rev. 112, 1940 (1958).
[CrossRef]

Wheaton, J. E. R.

Appl. Opt. (2)

Appl. Opt. Suppl. (1)

W. R. Bennett, Appl. Opt. Suppl. 1, 24 (1962).
[CrossRef]

Nature (2)

T. H. Maiman, Nature 187, 493 (1960).
[CrossRef]

H. G. Heard, Nature 200, 667 (1963).
[CrossRef]

Phys. Rev. (3)

A. L. Schawlow, C. H. Townes, Phys. Rev. 112, 1940 (1958).
[CrossRef]

B. A. Brice, Phys. Rev. 35, 960 (1930).
[CrossRef]

F. A. Jenkins, G. D. Rochester, Phys. Rev. 52, 1141 (1937).
[CrossRef]

Phys. Rev. Letters (1)

S. Jacobs, G. Gould, P. Rabinowitz, Phys. Rev. Letters 7, 415 (1961).
[CrossRef]

Soviet Phys.–JETP (1)

P. A. Bazhulin, I. N. Knyazev, G. G. Petrash, Soviet Phys.–JETP 22, 11 (1966).

U.S. Bureau of Mines Bull. (1)

J. Kelley, U.S. Bureau of Mines Bull. 383(1935).

Z. Physik (2)

J. Franck, H. G. Kuhn, Z. Physik 43, 164 (1927).
[CrossRef]

J. Franck, H. G. Kuhn, Z. Physik 44, 607 (1927).
[CrossRef]

Other (1)

J. N. Murrell, The Theory of Electronic Spectra of Organic Molecules (Methuen, London, 1963).

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Figures (3)

Fig. 1
Fig. 1

Absorption spectrum of AgCl.

Fig. 2
Fig. 2

Relevant energy level diagram of AgCl showing the vibrational bands examined.

Fig. 3
Fig. 3

Lyman discharge light pulse intensity as a function of time. (Scale 5 μsec/cm.)

Tables (2)

Tables Icon

Table I Computed Values for τ

Tables Icon

Table II Populations of Levels in AgCl Relative to NA = 1 at Various Vapor Pressures

Equations (2)

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J E A = I × 10 - E A N A + ( W N E / τ E A ) ,
N = N A + N B + N C + N D + N E + N F + N G + N H .

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