Abstract

Scandium oxide has proved to be a damage-resistant high-index material in laser coatings for use at 248 nm. The results of damage threshold measurements on laser reflectors and antireflection coatings of various designs, material combinations, and deposition temperatures are presented. The most significant effects are observed for overcoat layers on high reflectors and undercoat layers on antireflection coatings. Thresholds >6 J/cm2 for 20 nsec pulses were observed in both cases.

© 1982 Optical Society of America

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References

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  1. H. E. Bennett et al., “Ultraviolet Components for High Energy Applications,” Naval Weapons Center Technical Publication 6015 (Naval Weapons Center, China Lake, Calif., Mar.1978).
  2. C. K. Carniglia et al., Natl. Bur. Stand. (U.S.) Spec. Publ. 568, 377–390 (1979).
  3. J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).
  4. R. W. Dietz, J. M. Bennett, Appl. Opt. 5, 881 (1966).
    [PubMed]
  5. D. Milam, Proc. Soc. Photo-Opt. Instrum. Eng. 140, 52 (1978).

1979 (1)

C. K. Carniglia et al., Natl. Bur. Stand. (U.S.) Spec. Publ. 568, 377–390 (1979).

1978 (1)

D. Milam, Proc. Soc. Photo-Opt. Instrum. Eng. 140, 52 (1978).

1977 (1)

J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).

1966 (1)

Apfel, J. H.

J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).

Bennett, H. E.

H. E. Bennett et al., “Ultraviolet Components for High Energy Applications,” Naval Weapons Center Technical Publication 6015 (Naval Weapons Center, China Lake, Calif., Mar.1978).

Bennett, J. M.

Carniglia, C. K.

C. K. Carniglia et al., Natl. Bur. Stand. (U.S.) Spec. Publ. 568, 377–390 (1979).

Dietz, R. W.

Enemark, E. A.

J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).

Milam, D.

D. Milam, Proc. Soc. Photo-Opt. Instrum. Eng. 140, 52 (1978).

J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).

Smith, W. L.

J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).

Weber, M. J.

J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).

Appl. Opt. (1)

Natl. Bur. Stand. (U.S.) Spec. Publ. 509 (1)

J. H. Apfel, E. A. Enemark, D. Milam, W. L. Smith, M. J. Weber, Natl. Bur. Stand. (U.S.) Spec. Publ. 509, 255–259 (1977).

Natl. Bur. Stand. (U.S.) Spec. Publ. 568 (1)

C. K. Carniglia et al., Natl. Bur. Stand. (U.S.) Spec. Publ. 568, 377–390 (1979).

Proc. Soc. Photo-Opt. Instrum. Eng. (1)

D. Milam, Proc. Soc. Photo-Opt. Instrum. Eng. 140, 52 (1978).

Other (1)

H. E. Bennett et al., “Ultraviolet Components for High Energy Applications,” Naval Weapons Center Technical Publication 6015 (Naval Weapons Center, China Lake, Calif., Mar.1978).

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Figures (4)

Fig. 1
Fig. 1

(a) Temporal waveform of the laser pulse; (b) spatial profile of the laser beam at the sample surface.

Fig. 2
Fig. 2

Laser-damage thresholds of Sc2O3/MgF2 HR coatings deposited at 150°C. Solid circles represent 19-layer coatings and open circles represent 31-layer coatings. Dashed error bars signify samples from a repeat coating run.

Fig. 3
Fig. 3

Laser-damage thresholds of 19-layer Sc2O3/MgF2 HR coatings deposited at 250°C. Dashed error bars signify samples from a repeat coating run.

Fig. 4
Fig. 4

Laser-damage thresholds of AR coatings. Dashed error bars signify samples from a repeat coating run.

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