Growth and optical properties of Yb3+-doped Ba3Y2(BO3)4 crystal

Yb3+:Ba3Y2(BO3)(4) crystals with dimension of circle divide 20 x 30 mm(3) and few cracks have been grown by Czochralski method. Yb3+ :Ba(3)y(2)(BO3)(4) crystal congruently melts at 1222.7 degrees C. The strongest absorption band of Yb3+:Ba3Y2(BO3)(4) is at 977 nm with an absorption coefficient of 5.8cm(-1) and FWHM of 8nm. The absorption cross-section of this peak is calculated to be 1.23 x 10(-20) cm(2). The dominant feature of fluorescence spectrum is a broadband emission, extending from 925 to 1100 run. The emission cross-section is 8.05 X 10(-20) cm(2). The radiative lifetime and fluorescence lifetime are 0.587 ms and 0.937 ms, respectively. (c) 2006 Elsevier B.V. All rights reserved.