Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Opt Express. 2007 May 14;15(10):6069-74.

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

Author information

  • 1State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.

Abstract

We report on space-selective precipitation of nonlinear optical crystals in an Er(3+)-doped BaO-TiO(2)-SiO(2) 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 (Ba(2)TiSi(2)O(8)) are precipitated after the laser irradiation. The irradiation time for crystallization in Er(3+)-doped BaO-TiO(2)-SiO(2) glasses is longer than that in BaO-TiO(2)-SiO(2) glasses under the same irradiation conditions. The mechanisms responsible for the observed phenomena are discussed.

PMID:
19546911
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Write to the Help Desk