Efficient Pumping Scheme by Direct Excitation of Upper Laser Level in Nd:CNGG
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CAO Ning,
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LI Qi-Nan,
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ZHAO Yan-Ying,
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XU Chang-Wen,
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WEI Zhi-Yi,
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FENG Bao-Hua,
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ZHANG Zhi-Guo,
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ZHANG Huai-Jin,
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WANG Ji-Yang,
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HE Kun-Na,
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GAO Chun-Qing
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Abstract
We report an efficient pumping scheme which involves a direct excitation of the upper lasing level of a four-level laser in a Nd-doped Ca3(NbGa)2-xGa3O12 (Nd:CNGG) by using a tunable Ti:sapphire, 700-920nm, cw pump source. The slope efficiency is improved from 10.5% of the traditional band pumping at 808nm to 21.8% of the direct pumping at 882nm. The influence of pumping wavelength on lasing is discussed. We present a scheme of double pumping for lasing.
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CAO Ning, LI Qi-Nan, ZHAO Yan-Ying, XU Chang-Wen, WEI Zhi-Yi, FENG Bao-Hua, ZHANG Zhi-Guo, ZHANG Huai-Jin, WANG Ji-Yang, HE Kun-Na, GAO Chun-Qing. Efficient Pumping Scheme by Direct Excitation of Upper Laser Level in Nd:CNGG[J]. Chin. Phys. Lett., 2008, 25(11): 4016-4018.
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CAO Ning, LI Qi-Nan, ZHAO Yan-Ying, XU Chang-Wen, WEI Zhi-Yi, FENG Bao-Hua, ZHANG Zhi-Guo, ZHANG Huai-Jin, WANG Ji-Yang, HE Kun-Na, GAO Chun-Qing. Efficient Pumping Scheme by Direct Excitation of Upper Laser Level in Nd:CNGG[J]. Chin. Phys. Lett., 2008, 25(11): 4016-4018.
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CAO Ning, LI Qi-Nan, ZHAO Yan-Ying, XU Chang-Wen, WEI Zhi-Yi, FENG Bao-Hua, ZHANG Zhi-Guo, ZHANG Huai-Jin, WANG Ji-Yang, HE Kun-Na, GAO Chun-Qing. Efficient Pumping Scheme by Direct Excitation of Upper Laser Level in Nd:CNGG[J]. Chin. Phys. Lett., 2008, 25(11): 4016-4018.
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CAO Ning, LI Qi-Nan, ZHAO Yan-Ying, XU Chang-Wen, WEI Zhi-Yi, FENG Bao-Hua, ZHANG Zhi-Guo, ZHANG Huai-Jin, WANG Ji-Yang, HE Kun-Na, GAO Chun-Qing. Efficient Pumping Scheme by Direct Excitation of Upper Laser Level in Nd:CNGG[J]. Chin. Phys. Lett., 2008, 25(11): 4016-4018.
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