Studies on the SFD Properties of NdxGd1-xCa4O(BO3)3 Solid-solution Crystal

NdxGd1-xCa4O(BO3)3 (NdGdCOB) is a new self-frequency-doubling (SFD) solid-solution crystal. The second-harmonic generation (SHG) phase-matching (PM) curves were calculated by using refractive indices. The deff of NdGdCOB crystal along different PM directions were calculated according to the sellmeier equation and dijk data in which the (θ=66.8°, φ=132.6°) PM direction has the highest deff. SFD experiments were carried out with Ti:sapphire CW laser and pulsed dye-laser. A green laser output power up to 225 mW at 530 nm was achieved from a 7×3×3 mm3 crystal sample pumped by 1560 mW CW Ti:sapphire laser. The lasing threshold of SFD was lower than 1.8 mW along the PM direction (66.8°,132.6°). The optical-optical conversion efficiency was 14.4%. The conversion efficiency was 7.7% when 10×3×3 mm3 sample was side-pumped by the pulsed dye-laser tuned to 595.4 nm with 17.5 mJ energy and the lasing threshold is 1.2 mJ.

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ZHANG Shujun, CHENG Zhenxiang, LI Guangming, SHAO Zongshu, CHEN Huanchu, WANG Changqing, Y. T. Chow, HOU Xueyuan, SUN Yuming. Studies on the SFD Properties of NdxGd_1-xCa₄O(BO₃)₃ Solid-solution Crystal[J]. Chinese Journal of Lasers B, 2000, 9(3): 282. ZHANG Shujun, CHENG Zhenxiang, LI Guangming, SHAO Zongshu, CHEN Huanchu, WANG Changqing, Y. T. Chow, HOU Xueyuan, SUN Yuming. Studies on the SFD Properties of NdxGd_1-xCa₄O(BO₃)₃ Solid-solution Crystal[J]. 中国激光(英文版), 2000, 9(3): 282.

Studies on the SFD Properties of NdxGd_1-xCa₄O(BO₃)₃ Solid-solution Crystal

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