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Applied Optics

Applied Optics


  • Vol. 39, Iss. 22 — Aug. 1, 2000
  • pp: 3925–3930

Influence of sodium impurities on ArF excimer-laser-induced absorption in CaF2 crystals

Norio Komine, Shigeru Sakuma, Masaki Shiozawa, Tsutomu Mizugaki, and Eiji Sato  »View Author Affiliations

Applied Optics, Vol. 39, Issue 22, pp. 3925-3930 (2000)

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The formation of color centers induced by irradiation with ArF excimer lasers in CaF2 crystals was found to depend strongly on the sodium impurity concentration. Sodium-related color centers were generated by two-photon absorption because the slope of the induced absorption coefficient just after irradiation started was proportional to the square of the laser fluence. The saturation absorption also depended on laser fluence, and a photobleaching induced absorption phenomenon was observed. We concluded that the saturation absorption level was determined by the equilibrium between two-photon excitation and one-photon reverse reaction.

© 2000 Optical Society of America

OCIS Codes
(140.2180) Lasers and laser optics : Excimer lasers
(140.3330) Lasers and laser optics : Laser damage
(160.4670) Materials : Optical materials
(220.3740) Optical design and fabrication : Lithography
(300.1030) Spectroscopy : Absorption

Original Manuscript: January 21, 2000
Revised Manuscript: May 3, 2000
Published: August 1, 2000

Norio Komine, Shigeru Sakuma, Masaki Shiozawa, Tsutomu Mizugaki, and Eiji Sato, "Influence of sodium impurities on ArF excimer-laser-induced absorption in CaF2 crystals," Appl. Opt. 39, 3925-3930 (2000)

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  1. D. R. Cope, “UV lasers require tough transmissive materials,” Laser Focus World 28(1), 107–111 (1992).
  2. T. M. Bloomstein, M. Rothschild, R. R. Kunz, D. E. Hardy, R. B. Goodman, S. T. Palmacci, “Critical issues in 157 nm lithography,” J. Vac. Sci. Technol. B 16, 3154–3157 (1998). [CrossRef]
  3. J. H. Schulman, W. D. Compton, Color Centers in Solids (Pergamon, Oxford, 1962), Chap. X.
  4. D. L. Staebler, S. E. Schnatterly, “Optical studies of a photochromic color center in rare-earth-doped CaF2,” Phys. Rev. B 3, 516–526 (1971). [CrossRef]
  5. J. R. O’Connor, J. H. Chen, “Color centers in alkaline earth fluorides,” Phys. Rev. 130, 1790–1901 (1963). [CrossRef]
  6. M. Mizuguchi, H. Hosono, H. Kawazoe, T. Ogawa, “Generation of optical absorption bands in CaF2 single crystals by ArF excimer laser irradiation: effect of yttrium impurity,” J. Vac. Sci. Technol. A 16, 3052–3057 (1998). [CrossRef]
  7. M. Mizuguchi, H. Hosono, H. Kawazoe, T. Ogawa, “Color center formation and time-resolved photoluminescence by ArF excimer laser irradiation in CaF2 single crystals,” in Inorganic Optical Materials, J. A. Marker, ed., Proc. SPIE3424, 60–70 (1998). [CrossRef]
  8. M. Mizuguchi, H. Hosono, H. Kawazoe, T. Ogawa, “Time-resolved photoluminescence for diagnosis of resistance to ArF excimer laser damage to CaF2 single crystals,” J. Opt. Soc. Am. B 16, 1153–1159 (1999). [CrossRef]
  9. J. M. G. Tijero, F. Jaque, “Thermal and optical properties of the FA and (F2+)A centers in Na-doped CaF2 crystals,” Phys. Rev. B 41, 3832–3836 (1990). [CrossRef]
  10. J. M. G. Tijero, J. Casas-Gonzalez, “On the coloration of CaF2:Na,” J. Phys. Lett. 46, L861–L868 (1985). [CrossRef]
  11. J. L. Doualan, J. Margerie, F. Martin-Brunetiere, E. Rzepka, “Magnetic circular dichroism of color centers in CaF2:Na,” J. Phys. Lett. 44, L375–L385 (1985). [CrossRef]
  12. V. Liberman, M. Rothschild, J. H. C. Sedlacek, R. S. Uttaro, A. Grenville, “Excimer-laser-induced densification of fused silica: laser-fluence and material-grade effects on the scaling law,” J. Non-Cryst. Solids 244, 159–171 (1999). [CrossRef]
  13. E. D. Thoma, H. M. Yochum, P. A. Sheldon, R. T. Williams, “Subpicosecond absorption spectroscopy of band-gap excitation and defect formation in alkali halide crystals,” Nucl. Instrum. Methods Phys. Res. B 141, 552–554 (1998). [CrossRef]

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