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以光纤光栅为谐振腔搭建了波长为1020 nm的光纤激光器,并通过两级级联放大获得了590 mW的最大输出功率. 利用获得的波长为1020 nm的激光进行了波长为1064 nm种子光同带抽运放大,实验研究了不同增益光纤长度时放大器的输出功率和转换效率. 当增益光纤长度为8.5 m时,放大器最大输出功率为385 mW,斜率效率为81%. 进行了波长为976 nm的半导体激光器直接抽运波长为1064 nm种子光的实验. 在增益光纤长度最优时,其斜率效率为56.4%. 实验结果表明,同带抽运方式比传统抽运方式具有更高的转换效率. 研究结果可为波长为1020 nm的激光高功率放大和波长为1064 nm的光纤激光高功率同带抽运放大提供一定的参考.A 1020 nm fiber laser is designed based on fiber Bragg grating and then its output power is boosted to 590 mW through a two-stage amplifier. A tandem pumping fiber amplifier is constructed with the 1020 nm laser used as a pump source. The output power and the efficiency of the amplifier are measured with different lengths of gain fiber. A 385 mW maximum output power with an 81% slope-efficiency is achieved when the gain fiber is 8.5 m. The output power and the efficiency of a traditional amplifier in which 976 nm diode laser is used as a pump source are also measured. The experimental results indicate that tandem pumping fiber amplifier can achieve a higher efficiency than traditional fiber amplifier.
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Keywords:
- tandem pumping /
- fiber amplifier /
- slope-efficiency
[1] Lin H H, Jiang D B, Wang J J, Li M Z, Zhang R, Deng Y, Xu D P, Dang Z 2011 Acta Phys. Sin. 60 025208 [林宏奂、蒋东镔、王建军、李明中、张 锐、邓 颖、许党朋、党 钊 2011 物理学报 60 025208]
[2] [3] Limpert J, Liem A, Zellmer H 2003 Electron. Lett. 39 645
[4] Jeong Y, Sahu J, Payne D 2004 Opt. Express 12 6088
[5] [6] Limpert J, Rser F, Klingebiel S 2007 IEEE J. Sel. Top. Quantum Electron. 13 537
[7] [8] [9] Richardson D, Nilsson J, Clarkson W 2010 J. Opt. Soc. Am. B 27 63
[10] Peng X, Dong L 2008 J. Opt. Soc. Am. B 25 126
[11] [12] [13] Brilliant N, Kalliroi L 2001 Opt. Lett. 26 1669
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[1] Lin H H, Jiang D B, Wang J J, Li M Z, Zhang R, Deng Y, Xu D P, Dang Z 2011 Acta Phys. Sin. 60 025208 [林宏奂、蒋东镔、王建军、李明中、张 锐、邓 颖、许党朋、党 钊 2011 物理学报 60 025208]
[2] [3] Limpert J, Liem A, Zellmer H 2003 Electron. Lett. 39 645
[4] Jeong Y, Sahu J, Payne D 2004 Opt. Express 12 6088
[5] [6] Limpert J, Rser F, Klingebiel S 2007 IEEE J. Sel. Top. Quantum Electron. 13 537
[7] [8] [9] Richardson D, Nilsson J, Clarkson W 2010 J. Opt. Soc. Am. B 27 63
[10] Peng X, Dong L 2008 J. Opt. Soc. Am. B 25 126
[11] [12] [13] Brilliant N, Kalliroi L 2001 Opt. Lett. 26 1669
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