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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14580–14590

Yb3+ spectroscopy in (Nb or Ta):RbTiOPO4 single crystals for laser applications

Alexandra Peña, Joan Josep Carvajal, Maria Cinta Pujol, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Valentin Petrov, Patricia Segonds, and Benoît Boulanger  »View Author Affiliations

Optics Express, Vol. 15, Issue 22, pp. 14580-14590 (2007)

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Single crystals of Yb:RbTiOPO4 codoped with Nb5+ or Ta5+ were grown by the top seeded solution growth slow-cooling technique. The ytterbium concentration in the crystals varies as a function of the molar ratio of the precursor oxides and of the codopant, reaching a maximum value of 1.9×1020 Yb3+ ions/cm3. The broad band near 1 μm in absorption and emission spectra at room temperature is due to the large splitting of the Yb3+ ground state. The ytterbium 2F5/2 level radiative lifetime in Nb:RbTiOPO4(τrad = 2.7 ms), was calculated and then compared to the measured fluorescence decay time (τem = 2.2 ms), giving an intrinsic quantum efficiency of 81%. To evaluate the potentiality of these crystals for self-frequency doubling, preliminary results of Yb3+ laser operation and fundamental wavelength measurements for type-II non-critical second harmonic generation (λNCPM ) are also reported.

© 2007 Optical Society of America

OCIS Codes
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(160.4330) Materials : Nonlinear optical materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:

Original Manuscript: July 27, 2007
Revised Manuscript: September 20, 2007
Manuscript Accepted: September 22, 2007
Published: October 19, 2007

Alexandra Peña, Joan J. Carvajal, Maria C. Pujol, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Valentin Petrov, Patricia Segonds, and Benoît Boulanger, "Yb3+ spectroscopy in (Nb or Ta):RbTiOPO4 single crystals for laser applications," Opt. Express 15, 14580-14590 (2007)

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