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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 7, Iss. 1 — Jan. 1, 1990
  • pp: 53–56

Microscopic model of second-harmonic generation in glass fibers

B. Lesche  »View Author Affiliations

JOSA B, Vol. 7, Issue 1, pp. 53-56 (1990)

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A microscopic model is given to explain the irreversible changes in glass fibers caused by simultaneous irradiation with 1064- and 532-nm light. The model involves an excitation of Ge E′ defects by photons of the fourth harmonic. A quantum-mechanical formalism is developed that is especially suited to describe a system under the influence of radiation fields.

© 1990 Optical Society of America

Original Manuscript: November 30, 1988
Manuscript Accepted: September 1, 1989
Published: January 1, 1990

B. Lesche, "Microscopic model of second-harmonic generation in glass fibers," J. Opt. Soc. Am. B 7, 53-56 (1990)

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  1. U. Österberg, W. Margulis, “Dye laser pumped by Nd:YAG laser pulses frequency doubled in a glass optical fiber,” Opt. Lett. 11, 516 (1986). [CrossRef] [PubMed]
  2. R. H. Stolen, H. W. K. Tom, “Self-organized phase-matched harmonic generation in optical fibers,” Opt. Lett. 12, 585 (1987). [CrossRef] [PubMed]
  3. N. B. Baranova, B. Ya. Zel’dovich, “Extension of holography to multifrequency fields,” JETP Lett. 45, 717 (1987).
  4. W. Margulis, Departamento de fisica PUC-Rio de Janeiro 22452 Brazil (personal communication).
  5. This order-of-magnitude estimate results from the usual formula for second-order susceptibilities, assuming matrix elements of the dipole operator of the order of one elementary charge times 1 or 2 Å and EI of the order of 109V m−1.
  6. A. Krotkus, W. Margulis, “Investigations of the preparation process for efficient second-harmonic generation in optical fibers,” Appl. Phys. Lett. 52, 1942 (1988). [CrossRef]
  7. F. Ouellette, K. O. Hill, D. C. Johnson, “Light-induced erasure of self-organized χ(2)gratings in optical fibers,” Opt. Lett. 13, 515 (1988). [CrossRef] [PubMed]
  8. Ya. B. Zel’dovich, “Scattering and emission of a quantum system in a strong electromagnetic wave,” Sov. Phys. Usp. 16, 427 (1974). [CrossRef]
  9. The terms that were dropped in this approximation need not always be small; however, they add nothing new in the present context. They correspond to transitions that violate conservation of stroboscopic energy by integer multiples of ℏωI. The possibility of excitation by four-photon absorption, which was mentioned at the end of Section 2, can be described by these terms.

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