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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6069–6074

Femtosecond laser induced space-selective precipitation of nonlinear optical crystals in rare-earth-doped glasses

Bin Zhu, Ye Dai, Hongliang Ma, Songmin Zhang, Geng Lin, and Jianrong Qiu  »View Author Affiliations

Optics Express, Vol. 15, Issue 10, pp. 6069-6074 (2007)

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We report on space-selective precipitation of nonlinear optical crystals in an Er3+-doped BaO-TiO2-SiO2 glass by using a focused femtosecond laser with 800 nm, 250 kHz and 150 fs. An intense green emission due to upconversion luminescence is observed around the focal point of the femtosecond laser beam at the initial stage of the laser irradiation. A blue emission due to second harmonic generation begins to emerge from the irradiation region after 40 s irradiation. Micro-Raman spectra indicate that nonlinear optical crystals (Ba2TiSi2O8) are precipitated after the laser irradiation. The irradiation time for crystallization in Er3+-doped BaO-TiO2-SiO2 glasses is longer than that in BaO-TiO2-SiO2 glasses under the same irradiation conditions. The mechanisms responsible for the observed phenomena are discussed.

© 2007 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(160.2540) Materials : Fluorescent and luminescent materials
(160.5690) Materials : Rare-earth-doped materials
(190.4400) Nonlinear optics : Nonlinear optics, materials

ToC Category:
Ultrafast Optics

Original Manuscript: March 1, 2007
Revised Manuscript: April 18, 2007
Manuscript Accepted: April 24, 2007
Published: May 2, 2007

Bin Zhu, Ye Dai, Hongliang Ma, Songmin Zhang, Geng Lin, and Jianrong Qiu, "Femtosecond laser induced space-selective precipitation of nonlinear optical crystals in rare-earth-doped glasses," Opt. Express 15, 6069-6074 (2007)

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