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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 19 — Oct. 1, 2006
  • pp: 2867–2869

Two-photon-excited fluorescence from silicate glass containing tantalum ions pumped by a near-infrared femtosecond pulsed laser

Xiangeng Meng, Katsuhisa Tanaka, Shunsuke Murai, Koji Fujita, Kiyotaka Miura, and Kazuyuki Hirao  »View Author Affiliations

Optics Letters, Vol. 31, Issue 19, pp. 2867-2869 (2006)

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We report a novel phenomenon in sodium-calcium-silicate glass doped with Ta 5 + . Under irradiation with a 780 nm femtosecond pulsed laser, strong blue emission centered at about 420 nm could be observed. The spectral characteristics are similar to those pumped by ultraviolet photons. The log–log correlation between integrated emission intensity and pump power reveals that a two-photon absorption process is involved in the phenomenon. It is suggested that the presence of localized Ta 5 + 5 d 0 energy levels is responsible for the appearance of the blue emission. The results indicate that transition metal ions without d electrons play an important role in fields of optics when embedded into glass hosts.

© 2006 Optical Society of America

OCIS Codes
(140.3450) Lasers and laser optics : Laser-induced chemistry
(140.7090) Lasers and laser optics : Ultrafast lasers
(160.2750) Materials : Glass and other amorphous materials

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 30, 2006
Manuscript Accepted: June 30, 2006
Published: September 11, 2006

Xiangeng Meng, Katsuhisa Tanaka, Shunsuke Murai, Koji Fujita, Kiyotaka Miura, and Kazuyuki Hirao, "Two-photon-excited fluorescence from silicate glass containing tantalum ions pumped by a near-infrared femtosecond pulsed laser," Opt. Lett. 31, 2867-2869 (2006)

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