TY - JOUR
T1 - Growth and investigation of efficient self-frequency-doubling NdxGd1-xCa4O(BO3)3 crystal
AU - Zhang, Shujun
AU - Cheng, Zhenxiang
AU - Han, Jianru
AU - Zhou, Guangyong
AU - Shao, Zongshu
AU - Wang, Changqing
AU - Chow, Y. T.
AU - Chen, Huanchu
N1 - Funding Information:
The authors are thankful to Engineer Liu Xuesong for the crystal processing, Prof. Yang Zhaohe and Dr. Lu Jianren for the spectra measuring. The SFD experiments are supported by the Hong Kong University Grants Committee.
PY - 1999/10
Y1 - 1999/10
N2 - In GdCa4O(BO3)3 (GdCOB) crystal, the Gd3+ ions can be substituted by Nd3+ ions within the concentration of 0-100 at %. Combined laser action of the Nd3+ ions and nonlinear optical (NLO) properties of GdCOB crystal host in the mixed NdxGd1-xCOB causes the crystal to become self-frequency-doubling (SFD) material. The synthesis and crystal growth of NdxGd1-xCOB are reported in this paper. The polarized transmittance spectra and fluorescence spectra were measured at room temperature. The strong emission peaks in the range of 850-950 nm are reported for the first time for the NdxGd1-xCOB crystal. The (θ = 66.8°, φ = 132.6°) phase-matching direction was reported for the first time as the optimum phase-matching direction at 1060 nm by calculation and experiments whose deff was measured and found to be 2.1 pm/v. The SFD experiments were carried out on 3×3×7 mm3 sample with (66.8°, 132.6°) direction. The green output power at 530.5 nm was 192 mW when pumped by 1600 mW Ti:sapphire tuned to 811 nm. The threshold was 16 mW. The optical-optical conversion efficiency was 12%.
AB - In GdCa4O(BO3)3 (GdCOB) crystal, the Gd3+ ions can be substituted by Nd3+ ions within the concentration of 0-100 at %. Combined laser action of the Nd3+ ions and nonlinear optical (NLO) properties of GdCOB crystal host in the mixed NdxGd1-xCOB causes the crystal to become self-frequency-doubling (SFD) material. The synthesis and crystal growth of NdxGd1-xCOB are reported in this paper. The polarized transmittance spectra and fluorescence spectra were measured at room temperature. The strong emission peaks in the range of 850-950 nm are reported for the first time for the NdxGd1-xCOB crystal. The (θ = 66.8°, φ = 132.6°) phase-matching direction was reported for the first time as the optimum phase-matching direction at 1060 nm by calculation and experiments whose deff was measured and found to be 2.1 pm/v. The SFD experiments were carried out on 3×3×7 mm3 sample with (66.8°, 132.6°) direction. The green output power at 530.5 nm was 192 mW when pumped by 1600 mW Ti:sapphire tuned to 811 nm. The threshold was 16 mW. The optical-optical conversion efficiency was 12%.
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U2 - 10.1016/S0022-0248(99)00337-1
DO - 10.1016/S0022-0248(99)00337-1
M3 - Article
AN - SCOPUS:0032597744
SN - 0022-0248
VL - 206
SP - 197
EP - 202
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 3
ER -