Abstract

Decoloration of a Czochralski-grown YVO4 laser host is studied by evaluation of the optical absorption and the photoluminescence spectrum before and after annealing under various atmospheres. Decoloration of yellow as-grown crystals, as a result of the decrease in the absorption near the absorption edge, occurs independently of the air, N2, and O2 annealing atmospheres. The most dramatic decrease in the absorption is seen in N2. Annealing in N2 atmosphere is suggested to be effective for obtaining the highly transparent crystals.

© 1994 Optical Society of America

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References

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  1. J. R. O’Connor, Appl. Phys. Lett. 9, 407 (1966).
    [CrossRef]
  2. A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
    [CrossRef]
  3. R. A. Fields, M. Birnbaum, C. L. Fincher, Appl. Phys. Lett. 51, 1885 (1987).
    [CrossRef]
  4. S. Erdei, F. W. Ainger, J. Cryst. Growth 128, 1025 (1993).
    [CrossRef]
  5. H. M. Dess, S. R. Bolin, Trans. Metall. Soc. AIME 239, 359 (1967).
  6. F. M. Levin, J. Am. Ceram. Soc. 50, 381 (1967).
    [CrossRef]
  7. S. Z. Toma, F. F. Mikus, J. E. Mathers, J. Electrochem. Soc. 114, 955 (1967).
    [CrossRef]

1993 (1)

S. Erdei, F. W. Ainger, J. Cryst. Growth 128, 1025 (1993).
[CrossRef]

1987 (1)

R. A. Fields, M. Birnbaum, C. L. Fincher, Appl. Phys. Lett. 51, 1885 (1987).
[CrossRef]

1977 (1)

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

1967 (3)

H. M. Dess, S. R. Bolin, Trans. Metall. Soc. AIME 239, 359 (1967).

F. M. Levin, J. Am. Ceram. Soc. 50, 381 (1967).
[CrossRef]

S. Z. Toma, F. F. Mikus, J. E. Mathers, J. Electrochem. Soc. 114, 955 (1967).
[CrossRef]

1966 (1)

J. R. O’Connor, Appl. Phys. Lett. 9, 407 (1966).
[CrossRef]

Ainger, F. W.

S. Erdei, F. W. Ainger, J. Cryst. Growth 128, 1025 (1993).
[CrossRef]

Birnbaum, M.

R. A. Fields, M. Birnbaum, C. L. Fincher, Appl. Phys. Lett. 51, 1885 (1987).
[CrossRef]

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Bolin, S. R.

H. M. Dess, S. R. Bolin, Trans. Metall. Soc. AIME 239, 359 (1967).

Dess, H. M.

H. M. Dess, S. R. Bolin, Trans. Metall. Soc. AIME 239, 359 (1967).

Erdei, S.

S. Erdei, F. W. Ainger, J. Cryst. Growth 128, 1025 (1993).
[CrossRef]

Erler, J. W.

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Fields, R. A.

R. A. Fields, M. Birnbaum, C. L. Fincher, Appl. Phys. Lett. 51, 1885 (1987).
[CrossRef]

Fincher, C. L.

R. A. Fields, M. Birnbaum, C. L. Fincher, Appl. Phys. Lett. 51, 1885 (1987).
[CrossRef]

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Levin, F. M.

F. M. Levin, J. Am. Ceram. Soc. 50, 381 (1967).
[CrossRef]

Mathers, J. E.

S. Z. Toma, F. F. Mikus, J. E. Mathers, J. Electrochem. Soc. 114, 955 (1967).
[CrossRef]

Mikus, F. F.

S. Z. Toma, F. F. Mikus, J. E. Mathers, J. Electrochem. Soc. 114, 955 (1967).
[CrossRef]

O’Connor, J. R.

J. R. O’Connor, Appl. Phys. Lett. 9, 407 (1966).
[CrossRef]

Toma, S. Z.

S. Z. Toma, F. F. Mikus, J. E. Mathers, J. Electrochem. Soc. 114, 955 (1967).
[CrossRef]

Tucker, A. W.

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Appl. Phys. Lett. (2)

J. R. O’Connor, Appl. Phys. Lett. 9, 407 (1966).
[CrossRef]

R. A. Fields, M. Birnbaum, C. L. Fincher, Appl. Phys. Lett. 51, 1885 (1987).
[CrossRef]

J. Am. Ceram. Soc. (1)

F. M. Levin, J. Am. Ceram. Soc. 50, 381 (1967).
[CrossRef]

J. Appl. Phys. (1)

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

J. Cryst. Growth (1)

S. Erdei, F. W. Ainger, J. Cryst. Growth 128, 1025 (1993).
[CrossRef]

J. Electrochem. Soc. (1)

S. Z. Toma, F. F. Mikus, J. E. Mathers, J. Electrochem. Soc. 114, 955 (1967).
[CrossRef]

Trans. Metall. Soc. AIME (1)

H. M. Dess, S. R. Bolin, Trans. Metall. Soc. AIME 239, 359 (1967).

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Figures (3)

Fig. 1
Fig. 1

Absorption spectra for the specimens annealed in air, N2, and O2 along with the as-grown specimen.

Fig. 2
Fig. 2

Subtracted spectra of the specimens annealed in air, N2, and O2; the spectrum for the as-grown specimen is subtracted from those for the annealed specimens. The vertical axis indicates the value Δα = αas-grownαannealed, where αas-grown is the absorption of the as-grown specimen and αannealed is the absorption of the annealed specimens.

Fig. 3
Fig. 3

Photoluminescence spectra for the specimens annealed in air, N2 and O2 along with the result for the as-grown specimen.

Tables (1)

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Table 1 Typical Impurity Concentrations in Raw Materials and YVO4 Crystal Measured with the Inductively Coupled Plasma Techniquea

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