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Growth and optical properties of Yb~(3+)-doped Ba_3Y_2(BO_3)_4 crystal

机译:掺Yb〜(3+)Ba_3Y_2(BO_3)_4晶体的生长和光学性质

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摘要

Yb~(3+):Ba_3Y_2(BO_3)_4 crystals with dimension of O20 x 30 mm~3 and few cracks have been grown by Czochralski method. Yb~(3+):Ba_3Y_2(BO_3)_4 crystal congruently melts at 1222.7℃. The strongest absorption band of Yb~(3+):Ba_3Y_2(BO_3)_4 is at 977 nm with an absorption coefficient of 5.8 cm~(-1) and FWHM of 8 nm. 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 nm. 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.
机译:Yb〜(3 +):Ba_3Y_2(BO_3)_4晶体的尺寸为O20 x 30 mm〜3,采用直拉法生长的裂纹很少。 Yb〜(3 +):Ba_3Y_2(BO_3)_4晶体在1222.7℃融化。 Yb〜(3 +):Ba_3Y_2(BO_3)_4的最强吸收带为977 nm,吸收系数为5.8 cm〜(-1),FWHM为8 nm。计算出该峰的吸收截面为1.23×10〜(-20)cm〜2。荧光光谱的主要特征是宽带发射,从925 nm扩展到1100 nm。发射截面为8.05 x 10〜(-20)cm〜2。辐射寿命和荧光寿命分别为0.587 ms和0.937 ms。

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