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Spectral and Laser Properties of Yb:Lu AG Transparent Ceramics Fabricated by Tape Casting Method
Author(s) -
Ma Chaoyang,
Tang Fei,
Zhu Jiangfeng,
Du Miaomiao,
Yuan Xuanyi,
Yu Yang,
Wang Ke,
Wen Zicheng,
Zhang Jiantao,
Long Jiaqi,
Guo Wang,
Cao Yongge
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14322
Subject(s) - materials science , ceramic , full width at half maximum , transparent ceramics , laser , doping , transmittance , tape casting , laser diode , analytical chemistry (journal) , fiber laser , optoelectronics , diode , optics , composite material , wavelength , chemistry , physics , chromatography
Yb 3+ ‐doped Lu AG laser ceramics with different Yb 3+ ‐doping concentrations were successfully fabricated by nonaqueous tape casting method and vacuum sintering technology. XRD patterns and SEM morphologies of the ceramics were presented. The optical in‐line transmittance of the Yb‐doped Lu AG ceramics was about 83% at 1030 nm. The fluorescence lifetime of annealed and unannealed ceramic samples was compared. From the spectroscopic properties, it can be seen that the ceramics had a large emission cross section of 2.9 × 10 −20 cm 2 with a FWHM of about 7.2 nm at 1030 nm. Under 100% population inversion, the maximum gain coefficient was estimated to be 12.4 cm −1 at 1030 nm. With a fiber‐coupled diode laser as pump source, CW laser at 1030 nm was demonstrated and the maximum output power of 338.9 mW was achieved with a slop efficiency of 19%. A tuning range from 1028 to 1036 nm was obtained.