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Applied Optics

Applied Optics


  • Vol. 12, Iss. 4 — Apr. 1, 1973
  • pp: 661–664

Role of Cracks, Pores, and Absorbing Inclusions on Laser Induced Damage Threshold at Surfaces of Transparent Dielectrics

N. Bloembergen  »View Author Affiliations

Applied Optics, Vol. 12, Issue 4, pp. 661-664 (1973)

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The concentration of the electric field strength in the neighborhood of micropores and cracks may lower the nominal external intensity for electric avalanche breakdown by a factor 2–100 depending on the geometry of the crack and the dielectric constant. The presence of absorbing inclusions at the edge of microcracks will often be the dominant mechanism giving the lowest surface damage threshold. Inclusions and cracks with characteristic dimensions less than about 10−6 cm will not lower the breakdown threshold appreciably.

© 1973 Optical Society of America

Original Manuscript: July 27, 1972
Published: April 1, 1973

N. Bloembergen, "Role of Cracks, Pores, and Absorbing Inclusions on Laser Induced Damage Threshold at Surfaces of Transparent Dielectrics," Appl. Opt. 12, 661-664 (1973)

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  1. E. Yablonovitch, Appl. Phys. Lett. 19, 495 (1971). [CrossRef]
  2. D. Fradin, E. Yablonovitch, M. Bass, Appl. Opt. 12, 700 (1973). [CrossRef] [PubMed]
  3. R. W. Hopper, D. R. Uhlmann, J. Appl. Phys. 41, 4023 (1970). [CrossRef]
  4. M. D. Crisp, N. L. Boling, G. Dube, Appl. Phys. Lett. to be published.
  5. C. R. Giuliano, Appl. Phys. Lett.21, 39 (1972) and private communication. [CrossRef]
  6. E. Yablonovitch, N. Bloembergen, submitted to Phys. Rev. Lett.
  7. See, for example, L. Landau, E. M. Lifshitz, Electrodynamics of Continuous Media (Pergamon, London, 1960).
  8. J. A. Stratton, Electromagnetic Theory (McGraw-Hill, New York, 1940), pp. 211–214.
  9. F. A. Horrigan, T. F. Deutsch, Raytheon Research Report (July1972); private communication.
  10. See, for example, M. Born, E. Wolf, Principles of Optics (Pergamon, London, 1960).
  11. J. C. Maxwell, A Treatise on Electricity (Clarendon Press, Oxford, 1892), Vol. 1, p. 294.
  12. Note that a in this section denotes the small demension of an inclusion and should not be confused with the a in Sec. III and Fig. 1, where it denotes the major axis of an ellipsoidal crack.

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