https://doi.org/10.1051/epjap/2016150511
Regular Article
Growth and spectral characters of Nd:CaGdAlO4 crystal
1
National Engineering & Technology Research Center of Scattered Metals, Vital Materials Co., Limited, 511517 Qingyuan, P.R. China
2
School of Metallurgy and Environment, Central South University, 410083 Changsha, P.R. China
3
College of Fundamental Studies, Shanghai University of Engineering Science, 201620 Shanghai, P.R. China
4
Jiangsu Key Laboratory of Advanced Laser Material and Device, Jiangsu Normal University, 221116 Xuzhou, P.R. China
5
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800 Shanghai, P.R. China
6
State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, 250100 Jinan, P.R. China
a e-mail: jvqing.di@vitalchem.com
b e-mail: xdxu79@mail.sic.ac.cn
c e-mail: xia_ct@siom.ac.cn
Received:
11
October
2015
Revised:
23
January
2016
Accepted:
25
February
2016
Published online:
1
April
2016
In this paper, crystal growth and polarized spectra of Nd:CaGdAlO4 (Nd:CALGO) crystal were reported. The maximal absorption cross-sections are 6.8 and 7.5 × 10−20 cm2 for π-polarization and σ-polarization, and the emission cross-sections are 12.5 × 10−20 cm2 with full width at half maximum (FWHM) of 18 and 11 nm, respectively. The Judd-Ofelt (JO) theory was used to calculate the spectral parameters and the effective intensity parameters Ω2, Ω4 and Ω6 were 0.8 × 10−20 cm2, 7.5 × 10−20 cm2 and 5.8 × 10−20 cm2, respectively. The lifetime was 123 μs. The results show that Nd:CALGO crystal is a promising medium for laser output.
© EDP Sciences, 2016
