Abstract

(F2+)A centers can be produced in additively colored KI:Li crystals provided that the material is colored in a nitrogen-free atmosphere. The optical properties of (F2+)A centers in both additively colored KI:Li and KBr:Li are identical with those reported for electron-beam-colored materials. Formation of (F2+)A centers in additively colored KI:Li provides the basis for achieving a stable color-center laser material tunable from 2 to 4 μm.

© 1986 Optical Society of America

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References

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  1. I. Schneider, C. L. Marquardt, Opt. Lett. 6, 627 (1981); I. Schneider, Opt. Lett. 7, 271 (1982).
    [CrossRef] [PubMed]
  2. I. Schneider, M. J. Marrone, Opt. Lett. 4, 390 (1979).
    [CrossRef] [PubMed]
  3. I. Schneider, Solid State Commun. 34, 865 (1980).
    [CrossRef]
  4. I. Schneider, C. L. Marquardt, Opt. Lett. 5, 214 (1980).
    [CrossRef] [PubMed]
  5. C. R. Pollock, D. Jennings, J. Appl. Phys. B 28, 308 (1982).
  6. I. Schneider, C. R. Pollock, J. Appl. Phys. 54, 6193 (1983).
    [CrossRef]
  7. J. F. Pinto, L. W. Stratton, C. R. Pollock, Opt. Lett 10, 384 (1985).
    [CrossRef] [PubMed]
  8. I. Schneider, Opt. Lett. 6, 157 (1981).
    [CrossRef] [PubMed]
  9. The duration of the anneal depended on crystal thickness. 4–6-min anneals were required for crystals 1–2 mm thick.
  10. The blue-green source consisted of light from a 200-W super-pressure mercury lamp filtered through a CuSO4 solution and 0-52 Corning glass filters.
  11. G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
    [CrossRef]
  12. A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
    [CrossRef]
  13. J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 49, 2237 (1968).
    [CrossRef]
  14. J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 50, 1051 (1969).
    [CrossRef]
  15. C. C. Addison, B. M. Davies, J. Chem. Soc. A 1822 (1969).

1985 (1)

J. F. Pinto, L. W. Stratton, C. R. Pollock, Opt. Lett 10, 384 (1985).
[CrossRef] [PubMed]

1983 (2)

A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
[CrossRef]

I. Schneider, C. R. Pollock, J. Appl. Phys. 54, 6193 (1983).
[CrossRef]

1982 (2)

G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
[CrossRef]

C. R. Pollock, D. Jennings, J. Appl. Phys. B 28, 308 (1982).

1981 (2)

1980 (2)

1979 (1)

1969 (2)

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 50, 1051 (1969).
[CrossRef]

C. C. Addison, B. M. Davies, J. Chem. Soc. A 1822 (1969).

1968 (1)

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 49, 2237 (1968).
[CrossRef]

Addison, C. C.

C. C. Addison, B. M. Davies, J. Chem. Soc. A 1822 (1969).

Baldacchini, G.

A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
[CrossRef]

G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
[CrossRef]

Brailsford, J. R.

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 50, 1051 (1969).
[CrossRef]

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 49, 2237 (1968).
[CrossRef]

Davies, B. M.

C. C. Addison, B. M. Davies, J. Chem. Soc. A 1822 (1969).

Grassano, U. M.

A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
[CrossRef]

G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
[CrossRef]

Jennings, D.

C. R. Pollock, D. Jennings, J. Appl. Phys. B 28, 308 (1982).

Marquardt, C. L.

Marrone, M. J.

Morton, J. R.

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 50, 1051 (1969).
[CrossRef]

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 49, 2237 (1968).
[CrossRef]

Pinto, J. F.

J. F. Pinto, L. W. Stratton, C. R. Pollock, Opt. Lett 10, 384 (1985).
[CrossRef] [PubMed]

Polito, E.

A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
[CrossRef]

G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
[CrossRef]

Pollock, C. R.

J. F. Pinto, L. W. Stratton, C. R. Pollock, Opt. Lett 10, 384 (1985).
[CrossRef] [PubMed]

I. Schneider, C. R. Pollock, J. Appl. Phys. 54, 6193 (1983).
[CrossRef]

C. R. Pollock, D. Jennings, J. Appl. Phys. B 28, 308 (1982).

Scacco, A.

A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
[CrossRef]

G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
[CrossRef]

Schneider, I.

Somma, F.

A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
[CrossRef]

G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
[CrossRef]

Stratton, L. W.

J. F. Pinto, L. W. Stratton, C. R. Pollock, Opt. Lett 10, 384 (1985).
[CrossRef] [PubMed]

Vannotti, L. E.

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 50, 1051 (1969).
[CrossRef]

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 49, 2237 (1968).
[CrossRef]

J. Appl. Phys. (2)

C. R. Pollock, D. Jennings, J. Appl. Phys. B 28, 308 (1982).

I. Schneider, C. R. Pollock, J. Appl. Phys. 54, 6193 (1983).
[CrossRef]

J. Chem. Phys. (2)

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 49, 2237 (1968).
[CrossRef]

J. R. Brailsford, J. R. Morton, L. E. Vannotti, J. Chem. Phys. 50, 1051 (1969).
[CrossRef]

J. Chem. Soc. A (1)

C. C. Addison, B. M. Davies, J. Chem. Soc. A 1822 (1969).

Opt. Lett (1)

J. F. Pinto, L. W. Stratton, C. R. Pollock, Opt. Lett 10, 384 (1985).
[CrossRef] [PubMed]

Opt. Lett. (4)

Radiat. Eff. (1)

A. Scacco, G. Baldacchini, U. M. Grassano, E. Polito, F. Somma, Radiat. Eff. 72, 185 (1983).
[CrossRef]

Solid State Commun. (2)

I. Schneider, Solid State Commun. 34, 865 (1980).
[CrossRef]

G. Baldacchini, U. M. Grassano, E. Polito, A. Scacco, F. Somma, Solid State Commun. 41, 815 (1982).
[CrossRef]

Other (2)

The duration of the anneal depended on crystal thickness. 4–6-min anneals were required for crystals 1–2 mm thick.

The blue-green source consisted of light from a 200-W super-pressure mercury lamp filtered through a CuSO4 solution and 0-52 Corning glass filters.

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Figures (4)

Fig. 1
Fig. 1

Absorption spectra measured at 4 K of an additively colored KI:Li crystal, 1 mm thick. The dashed curve is the spectrum before optical treatment, and the solid curve was measured afterward. The optical treatment consists of exposure to (1) blue-green light for 5 min at 260 K, for 1 h at 200 K, and for 4 h at 150 K; and (2) red light at 4 K to neutralize all centers.

Fig. 2
Fig. 2

Absorption changes induced by blue-green light at 4 K for an additively colored KI:Li crystal, 5 mm thick, containing (F2)A centers produced using the optical treatment of Fig. 1.

Fig. 3
Fig. 3

Normalized emission spectrum measured at 77 K for F2+ and (F2+)A centers in KI:Li using 1.60-μm excitation.

Fig. 4
Fig. 4

Normalized excitation spectra measured at 77 K for the F2+ and (F2+)A emission bands centered at 2.16 and 3.00 μm, respectively.

Tables (1)

Tables Icon

Table 1 F2, F2+, (F2)A, (F2+)A Center Absorption and Emission Band Peaks at 77 K (μm)

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