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Applied Optics

Applied Optics


  • Vol. 23, Iss. 21 — Nov. 1, 1984
  • pp: 3796–3805

Absolute onset of optical surface damage using distributed defect ensembles

J. O. Porteus and Steven C. Seitel  »View Author Affiliations

Applied Optics, Vol. 23, Issue 21, pp. 3796-3805 (1984)

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The scaling of laser damage thresholds with irradiated spot size is a well-known effect. When damage is defect dominated, the spot-size scaling can be attributed to the conventional definition of the threshold at the 50% level of damage probability. By redefining the threshold at the 0% level (absolute damage onset), one obtains a result that is spot-size independent. A method is presented here for obtaining the damage onset of optical surfaces subjected to pulsed laser radiation. The method involves weighted least-squares fitting of damage frequency data with a three-parameter distributed ensemble representing inherent defect damage characteristics. Spot-size effects in the data are simulated by a scaling transformation applied to the ensemble before fitting. Direct and inverse transformations are derived for Gaussian and top-hat spatial intensity profiles, and advantages of the latter for testing are pointed out. Three examples of applications to 2.7-μm multilayer coatings are presented, and the general inadequacy of the two-parameter degenerate ensemble is demonstrated. Extraction of defect densities, discrimination of different defect classes, and representation of uncertainty in the onset are discussed.

© 1984 Optical Society of America

Original Manuscript: March 28, 1984
Published: November 1, 1984

J. O. Porteus and Steven C. Seitel, "Absolute onset of optical surface damage using distributed defect ensembles," Appl. Opt. 23, 3796-3805 (1984)

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  1. H. E. Bennett, A. H. Guenther, D. Milam, B. E. Newnam, “Laser-Induced Damage in Optical Materials: Thirteenth ASTM Symposium,” Appl. Opt. 22, 3276 (1983). [CrossRef] [PubMed]
  2. D. B. Nichols, D. J. Morris, M. P. Bailey, R. B. Hall, “Laser Induced Emission and Laser Damage of Optical Components,” in Proceedings, Fifteenth Annual Symposium on Optical Materials for High Power Lasers, Boulder, Colo., 14–16 Nov. 1983”; in process.
  3. C. D. Marrs, J. O. Porteus, J. R. Palmer, “Defect-Damage precursors in Visible Wavelength Mirrors,” ibid.
  4. S. C. Seitel, J. O. Porteus, “1.06 μm Laser Damage Round-Robin Testing with 13 ns Pulse Duration and 40 μm Spot Size,” Appl. Opt., 23, 3767 (1984). [CrossRef] [PubMed]
  5. J. O. Porteus, J. L. Jernigan, W. N. Faith, “Multithreshold Measurement and Analysis of Pulsed Laser Induced Damage in Optical Surfaces,” Natl. Bur. Stand. U.S. Spec. Publ. 509, 507 (1978).
  6. J. O. Porteus, D. L. Decker, J. L. Jernigan, W. N. Faith, M. Bass, “Evaluation of Metal Mirrors for High Power Applications by Multithreshold Damage Analysis,” IEEE J. Quantum Electron. QE-14, 776 (1978). [CrossRef]
  7. S. R. Foltyn, “Spotsize Effects in Laser Damage Testing,” Natl. Bur. Stand. U.S. Spec. Publ. 669, 368 (1984).
  8. J. O. Porteus, “Determinations of the Onset of Defect-Driven Pulsed Laser Damage in 2.7 μm Optical Coatings,” High Power Laser Optical Components Topical Meeting, Boulder, Colo., 18, 19 Nov. 1982”; in process.
  9. S. C. Seitel, J. O. Porteus, “Toward Improved Accuracy in Limited-Scale Pulsed Laser Damage Testing Via the Onset Method,” in Proceedings, Fifteenth Annual Symposium on Optical Materials for High Power Lasers, Boulder, Colo., 14–16 Nov. 1983”; in process.
  10. Yu. K. Danileiko, Yu. P. Minaev, V. N. Nikolaev, A. V. Sidorin, “Determination of the Characteristics of Microdefects from Statistical Relationships Governing Laser Damage to Solid Transparent Materials,” Sov. J. Quantum Electron. 11, 1445 (1981). [CrossRef]
  11. Correction for the tail or for scattering losses in calibrating axial intensity is a separate problem, which is discussed in Refs. 4 and 17.
  12. L. G. Parratt, Probability and Experimental Errors in Science (Wiley, New York, 1961), Sec. 3.4
  13. Ref. 12, pp. 92–94.
  14. M. Abramowitz, I. A. Stegun, Eds. Handbook of Mathematical Functions (Dover, New York, 1965), pp. 887 and 916.
  15. Ref. 12, pp. 114, 115.
  16. S. C. Seitel, J. B. Franck, C. D. Marrs, G. D. Williams, “Selective and Uniform Laser-Induced Failure of Antireflection-Coated LiNbO3 Surfaces,” IEEE J. Quantum Electron. QE-19, 475 (1983). [CrossRef]
  17. J. O. Porteus, D. L. Decker, W. N. Faith, D. J. Grandjean, S. C. Seitel, M. J. Soileau, “Pulsed Laser-Induced Melting of Precision Diamond-Machined Cu, Ag, and Au at Infrared Wavelengths,” IEEE J. Quantum Electron. QE-17, 2078 (1981). [CrossRef]

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