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讨论了利用光谱滤波器实现自启动的被动锁模掺Yb3+光纤环形激光器的锁模机理,并研制出全光纤结构超短脉冲掺Yb3+光纤环形激光器.使用980 nm二极管激光器作为抽运源,高掺杂浓度掺Yb3+光纤作为增益介质.在净群速度色散为正的环形腔中加入光谱滤波器,抑制Yb3+离子在1030 nm强发射峰的同时,通过对啁啾脉冲的光谱滤波实现脉冲压缩.光谱滤波器与光纤非线性偏振旋转效应相结合,实现了激光器在1053 nm可自启动、十分稳定的锁模运转.激光器锁模阈值功率300 mW,平均斜率效率18.3%,最大输出功率53.07 mW,对应最大输出脉冲能量3.2 nJ.锁模光脉冲中心波长1053.6 nm,3 dB带宽10.84 nm,重复频率16.45 MHz.锁模脉冲宽度为皮秒量级,经腔外光栅对压缩至188 fs.
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关键词:
- 掺Yb3+光纤激光器 /
- 自启动锁模 /
- 全光纤
Theory of the passively mode-locked Yb3+ doped fiber ring laser self-starting through spectral filter is presented. The all-fiber Yb3+ doped fiber ring laser generating ultrashort pulses are designed and fabricated. High concentration Yb3+ doped fiber was employed as gain medium, which was pumped by a 980 nm diode laser. In the all-normal-dispersion cavity, a spectral filter was spliced to reduce the large emission peak at 1030 nm of Yb3+ ion and to generate an additional pulse shaping through spectral filtering of chirped pulse. Self-starting and stable mode-locking centered at 1053 nm was achieved by nonlinear polarization evolution along with spectral filtering from the filter. The mode-locking threshold was 300 mW, with the slope efficiency of 18.3%, the maximum output power was 53.07 mW, corresponding to the maximum pulse energy of 3.2 nJ. The center wavelength of the mode-locked pulse was 1053.6 nm, with 3 dB bandwidth of 10.84 nm at the repetition rate of 16.45 MHz. The picosecond mode-locked pulse can be dechirped to 188 fs using grating pair outside the cavity.-
Keywords:
- Yb3+ doped fiber laser /
- self-starting mode locking /
- all-fiber laser
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[2] Dawson J W, Liao Z M, Mitchell S, Messerly M, Beach R, Jovanovic I, Brown C, Payne S, Barty C P J 2005 SPIE 5709 37
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[5] Lin H H, Lu Z H, Wang J J, Zhang Y, Wang F R, Xu D P, Zhang R, Li M Z, Deng Q H, Luo Y M, Tang J, Ding L 2008 Acta Phys. Sin. 57 5646 (in Chinese) [林宏奂、卢振华、王建军、张 颖、王凤蕊、许党朋、张 锐、李明中、邓青华、罗亦鸣、唐 军、丁 磊 2008 物理学报 57 5646]
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[16] Anderson D, Desaix M, Lisak M, Quiroga-Teixeiro M L 1992 J. Opt. Soc. Am. B 9 1358
[17] Buckley J, Chong A, Zhou S, Renninger W, Wise F W 2007 J. Opt. Soc. Am. B 24 1803
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[19] Lei T, Tu C H, Li E B, Li Y N, Guo W G, Wei D, Zhu H, Lü F Y 2007 Acta Phys. Sin. 56 2769 (in Chinese) [雷 霆、涂成厚、李恩邦、李勇男、郭文刚、魏 岱、朱 辉、吕福云 2007 物理学报 56 2769]
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[21] Wang Y H, Ma C S, Li D L, Zheng J 2008 Acta Opt. Sin. 37 855 (in Chinese) [汪玉海、马春生、李德禄、郑 杰 2008 光学学报 37 855]
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[23] Ilday F , Buckley J R, Clark W G, Wise F W 2004 Phys. Rev.Lett. 92 213902
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[1] Dawson J W, Liao Z M, Jovanovic I, Wattellier B, Beach R, Payne S A, Barty C P J 2003 UCRL-JC-152561
[2] Dawson J W, Liao Z M, Mitchell S, Messerly M, Beach R, Jovanovic I, Brown C, Payne S, Barty C P J 2005 SPIE 5709 37
[3] Huang X J, Liu Y Z, Sui Z, Li M Z, Li X, Lin H H, Wang J J 2006 Acta Phys. Sin. 55 1191 (in Chinese) [黄绣江、刘永智、隋 展、李明中、李 忻、林宏奂、王建军 2006 物理学报 55 1191]
[4] Yang L Z, Chen G F, Wang Y S, Zhao W, Ding G L, Xiong H J 2005 Chin. J. Lasers 32 153 (in Chinese) [杨玲珍、陈国夫、王屹山、赵 卫、丁广雷、熊红军 2005 中国激光 32 153]
[5] Lin H H, Lu Z H, Wang J J, Zhang Y, Wang F R, Xu D P, Zhang R, Li M Z, Deng Q H, Luo Y M, Tang J, Ding L 2008 Acta Phys. Sin. 57 5646 (in Chinese) [林宏奂、卢振华、王建军、张 颖、王凤蕊、许党朋、张 锐、李明中、邓青华、罗亦鸣、唐 军、丁 磊 2008 物理学报 57 5646]
[6] Lin H H, Sui Z, Li M Z, Wang J J 2006 High Power Laser and Particle Beams 18 825 (in Chinese) [林宏奂、隋 展、李明中、 王建军 2006 强激光与粒子束 18 825]
[7] Prochnow O, Ruehl A, Schultz M, Wandt D, Kracht D 2007 Opt. Express 15 6889
[8] Kieu K, Wise F W 2008 Opt. Express 16 11453
[9] Michael S, Heike K, Oliver P, Doeter W, Uwe M, Dietmar K 2008 Opt. Express 16 19562
[10] Luo Z C, Xu W C, Song C X, Luo A P, Chen W C 2009 Chin. Phys. B 18 1674
[11] Bale B G, Kutz J N, Chong A, Renninger W H, Wise F W 2008 J. Opt. Soc. Am. B 25 1763
[12] Ilday F , Buckley J R, Lim H, Wise F W, Clark W G 2003 Opt. Lett. 28 1365
[13] Komarov A, Leblond H, Sanchez F 2005 Phys. Rev. A 71 053809
[14] Chong A, Buckley J, Renninger W, Wise F 2006 Opt. Express 14 10095
[15] Paschotta R, Nilsson J, Tropper A C, Hanna D C 1997 IEEE Journal of Quantum Electronics 33 1049
[16] Anderson D, Desaix M, Lisak M, Quiroga-Teixeiro M L 1992 J. Opt. Soc. Am. B 9 1358
[17] Buckley J, Chong A, Zhou S, Renninger W, Wise F W 2007 J. Opt. Soc. Am. B 24 1803
[18] Agrawal G P(Translated by Jia D F et al) 2002 Nonlinear Fiber Optics & Applications of Nonlinear Fiber Optics (Beijing: Publishing House of Electronics Industry) pp26—31, pp64—71, pp132—140 (in Chinese )
[19] Lei T, Tu C H, Li E B, Li Y N, Guo W G, Wei D, Zhu H, Lü F Y 2007 Acta Phys. Sin. 56 2769 (in Chinese) [雷 霆、涂成厚、李恩邦、李勇男、郭文刚、魏 岱、朱 辉、吕福云 2007 物理学报 56 2769]
[20] Chong A, Renninger W H, Wise F W 2008 J. Opt. Soc. Am. 25 140
[21] Wang Y H, Ma C S, Li D L, Zheng J 2008 Acta Opt. Sin. 37 855 (in Chinese) [汪玉海、马春生、李德禄、郑 杰 2008 光学学报 37 855]
[22] Liu H G, Hu M L, Song Y J, Li Y F, Chai L, Wang C Y 2010 Chin. Phys. B 19 014215
[23] Ilday F , Buckley J R, Clark W G, Wise F W 2004 Phys. Rev.Lett. 92 213902
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