Facile active control of a pulsed erbium-doped fiber laser using modulation depth tunable carbon nanotubes
Short pulsed fiber lasers have been widely made using single-walled carbon nanotubes as a saturable absorber (SA). However, most of the currently used devices can only operate in one determined operation state with an unchangeable modulation SA depth in the cavity, which significantly limits their application in photonic devices. In this paper, well-aligned carbon nanotube arrays are synthesized using zeolite AlPO4-5 as a template, which features anisotropic optical absorption. The linear optical absorption of the as-synthesized carbon nanotube arrays can easily be tuned by adjusting a polarization controller, thus providing a tunable modulation depth for the carbon nanotube SA. By exploiting this SA in an erbium-doped fiber laser cavity, both Q-switched and mode-locked pulsed lasers are achieved by simply adjusting a polarization controller under a fixed pump power of 330 mW. In addition, the repetition rate of the Q-switching and pulse duration of the mode-locking can be tuned according to the variation of modulation depth. Moreover, soliton molecules can be obtained when the modulation depth of the SA is 4.5%.
基金项目：National Key Research and Development Program of China (2016YFA0401100); National Natural Science Foundation of China (NSFC)10.13039/501100001809 (61575129, 61705134); Shenzhen Science and Technology Project (JCYJ20160328144942069); China Postdoctoral Science Foundation10.13039/501100002858 (2017M612723).
Shuangchen Ruan：Shenzhen Key Laboratory of Laser Engineering, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen 518060, China
Jianpang Zhai：Shenzhen Key Laboratory of Laser Engineering, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen 518060, China
Ling Li：Shenzhen Key Laboratory of Laser Engineering, Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, Shenzhen University, Shenzhen 518060, China
Jihong Pei：College of Information Engineering, ATR National Defence S&T Key Laboratory, Shenzhen University, Shenzhen 518060, China
Zikang Tang：Institute of Applied Physics & Materials Engineering, Faculty of Science and Technology, University of Macau, Macau, China
【1】S. Lijima, and T. Ichihashi, “Single-shell carbon nanotubes of 1-nm diameter,” Nature 364 , 737 (1993).
【2】L. Wen, F. Li, and H. M. Cheng, “Carbon nanotubes and graphene for flexible electrochemical energy storage: from materials to devices,” Adv. Mater. 28 , 4306–4337 (2016).
【3】M. F. De Volder, S. H. Tawfick, R. H. Baughman, and A. J. Hart, “Carbon nanotubes: present and future commercial applications,” Science 339 , 535–539 (2013).
【4】P. Avouris, M. Freitag, and V. Perebeinos, “Carbon-nanotube photonics and optoelectronics,” Nat. Photonics 2 , 341–350 (2008).
【5】M. Chernysheva, A. Rozhin, Y. Fedotov, C. Mou, R. Arif, S. M. Kobtsev, E. M. Dianov, and S. K. Turitsyn, “Carbon nanotubes for ultrafast fibre lasers,” Nanophotonics 6 , 1–30 (2017).
【6】W. S. Kwon, H. Lee, J. H. Kim, J. Choi, K. S. Kim, and S. Kim, “Ultrashort stretched-pulse L-band laser using carbon-nanotube saturable absorber,” Opt. Express 23 , 7779–7785 (2015).
【7】J. Wang, Y. Yan, A. P. Zhang, B. Wu, Y. Shen, and H. Y. Tam, “Tunable scalar solitons from a polarization-maintaining mode-locked fiber laser using carbon nanotube and chirped fiber Bragg grating,” Opt. Express 24 , 22387–22394 (2016).
【8】Y. Wang, S. U. Alam, E. D. Obraztsova, A. S. Pozharov, S. Y. Set, and S. Yamashita, “Generation of stretched pulses and dissipative solitons at 2 μm from an all-fiber mode-locked laser using carbon nanotube saturable absorbers,” Opt. Lett. 41 , 3864–3867 (2016).
【9】M. Tsuzuki, L. Jin, M. Yamanaka, V. Sonnenchein, H. Tomita, A. Sato, T. Ohara, Y. Sakakibara, E. Omoda, H. Kataura, T. Iguchi, and N. Nishizawa, “Midinfrared optical frequency comb based on difference frequency generation using high repetition rate Er-doped fiber laser with single wall carbon nanotube film,” Photon. Res. 4 , 313–317 (2016).
【10】Y. Zhou, J. Lin, X. Zhang, L. Xu, C. Gu, B. Sun, A. Wang, and Q. Zhan, “Self-starting passively mode-locked all fiber laser based on carbon nanotubes with radially polarized emission,” Photon. Res. 4 , 327–330 (2016).
【11】S. Kobtsev, A. Ivanenko, Y. G. Gladush, B. Nyushkov, A. Kokhanovskiy, A. S. Anisimov, and A. G. Nasibulin, “Ultrafast all-fibre laser mode-locked by polymer-free carbon nanotube film,” Opt. Express 24 , 28768–28773 (2016).
【12】L. Hou, H. Guo, Y. Wang, J. Sun, Q. Lin, Y. Bai, and J. Bai, “Sub-200 femtosecond dispersion-managed soliton ytterbium-doped fiber laser based on carbon nanotubes saturable absorber,” Opt. Express 26 , 9063–9070 (2018).
【13】J. Koo, Y. W. Song, and J. H. Lee, “A carbon nanotube-embedded fiber-optic tunable coupler for flexible repetition rate control of a passively Q-switched fiber laser,” Laser Phys. 24 , 045105 (2014).
【14】H. H. Liu, K. K. Chow, S. Yamashita, and S. Y. Set, “Carbon-nanotube-based passively Q-switched fiber laser for high energy pulse generation,” Opt. Laser Technol. 45 , 713–716 (2013).
【15】E. J. Lee, S. Y. Choi, H. Jeong, N. H. Park, W. Yim, M. H. Kim, J. K. Park, S. Son, S. Bae, S. J. Kim, K. Lee, Y. H. Ahn, K. J. Ahn, B. H. Hong, J. Y. Park, F. Rotermund, and D. I. Yeom, “Active control of all-fibre graphene devices with electrical gating,” Nat. Commun. 6 , 6851 (2015).
【16】Q. Sheng, M. Feng, W. Xin, T. Han, Y. Liu, Z. Liu, and J. Tian, “Actively manipulation of operation states in passively pulsed fiber lasers by using graphene saturable absorber on microfiber,” Opt. Express 21 , 14859–14866 (2013).
【17】Y. Chen, G. Jiang, S. Chen, Z. Guo, X. Yu, C. Zhao, H. Zhang, Q. Bao, S. Wen, D. Tang, and D. Fan, “Mechanically exfoliated black phosphorus as a new saturable absorber for both Q-switching and mode-locking laser operation,” Opt. Express 23 , 12823–12833 (2015).
【18】Q. Sheng, M. Feng, W. Xin, H. Guo, T. Han, Y. Li, Y. Liu, F. Gao, F. Song, Z. Liu, and J. Tian, “Tunable graphene saturable absorber with cross absorption modulation for mode-locking in fiber laser,” Appl. Phys. Lett. 105 , 041901 (2014).
【19】S. Liu, Z. Li, Y. Ge, H. Wang, R. Yue, X. Jiang, J. Li, Q. Wen, and H. Zhang, “Graphene/phosphorene nano-heterojunction: facile synthesis, nonlinear optics, and ultrafast photonics applications with enhanced performance,” Photon. Res. 5 , 662–668 (2017).
【20】L. Titova, C. Pint, Q. Zhang, R. Hauge, J. Kono, and F. Hegmann, “Generation of terahertz radiation by optical excitation of aligned carbon nanotubes,” Nano Lett. 15 , 3267–3272 (2015).
【21】H. Yang, B. Fu, D. Li, Y. Tian, Y. Chen, M. Mattila, Z. Yong, R. Li, A. Hassanien, C. Yang, I. Tittonen, Z. Ren, J. Bai, Q. Li, E. I. Kauppinen, H. Lipsanena, and Z. Sun, “Broadband laser polarization control with aligned carbon nanotubes,” Nanoscale 7 , 11199–11205 (2015).
【22】L. Zhang, Y. Wu, L. Deng, Y. Zhou, C. Liu, and S. Fan, “Photodetection and photoswitch based on polarized optical response of macroscopically aligned carbon nanotubes,” Nano Lett. 16 , 6378–6382 (2016).
【23】Z. K. Tang, L. Zhang, N. Wang, X. X. Zhang, G. H. Wen, G. D. Li, J. N. Wang, C. T. Chan, and P. Sheng, “Superconductivity in 4 angstrom single-walled carbon nanotubes,” Science 292 , 2462–2465 (2001).
【24】N. Wang, Z. K. Tang, G. D. Li, and J. S. Chen, “Single-walled 4 carbon nanotube arrays,” Nature 408 , 50–51 (2000).
【25】Z. M. Li, Z. K. Tang, H. J. Liu, N. Wang, C. T. Chan, R. Saito, S. Okada, G. D. Li, J. S. Chen, N. Nagasawa, and S. Tsuda, “Polarized absorption spectra of single-walled 4 carbon nanotubes aligned in channels of an AlPO4-5 single crystal,” Phys. Rev. Lett. 87 , 127401 (2001).
【26】A. Labropoulos, C. Veziri, M. Kapsi, G. Pilatos, V. Likodimos, M. Tsapatsis, N. K. Kanellopoulos, G. E. Romanos, and G. N. Karanikolos, “Carbon nanotube selective membranes with subnanometer, vertically aligned pores, and enhanced gas transport properties,” Chem. Mater. 27 , 8198–8210 (2015).
【27】Y. F. Mei, G. G. Siu, R. K. Y. Fu, P. K. Chu, Z. M. Li, J. P. Zhai, H. J. Liu, Z. K. Tang, C. W. Lai, and H. C. Ong, “Visible cathodoluminescence of 4 single-walled carbon nanotubes,” Appl. Phys. Lett. 87 , 213114 (2005).
【28】Q. Chen, Z. Wang, Y. Zheng, W. Shi, D. Wang, Y.-C. Luo, B. Zhang, J. Lu, H. Zhang, J. Pan, C.-Y. Mou, Z. Tang, and P. Sheng, “New developments in the growth of 4 angstrom carbon nanotubes in linear channels of zeolite template,” Carbon 76 , 401–409 (2014).
【29】F. X. Kartner, I. D. Jung, and U. Keller, “Soliton mode-locking with saturable absorbers,” IEEE J. Sel. Top. Quantum Electron. 2 , 540–556 (1996).
【30】D. Tang, B. Zhao, L. Zhao, and H. Tam, “Soliton interaction in a fiber ring laser,” Phys. Rev. E 72 , 016616 (2005).
【31】A. Grudinin, and S. Gray, “Passive harmonic mode locking in soliton fiber lasers,” J. Opt. Soc. Am. B 14 , 144–154 (1997).
【32】N. Seong, and D. Kim, “Experimental observation of stable bound solitons in a figure-eight fiber laser,” Opt. Lett. 27 , 1321–1323 (2002).
【33】S. Chouli, and P. Grelu, “Rains of solitons in a fiber laser,” Opt. Express 17 , 11776–11781 (2009).
【34】S. Chouli, and P. Grelu, “Soliton rains in a fiber laser: an experimental study,” Phys. Rev. A 81 , 063829 (2010).
【35】V. J. Matsas, T. P. Newson, D. J. Richardson, and D. N. Payne, “Selfstarting passively mode-locked fibre ring soliton laser exploiting nonlinear polarisation rotation,” Electron. Lett. 28 , 1391–1393 (1992).
【36】C. Gao, Z. Wang, H. Luo, and L. Zhan, “High energy all-fiber Tm-doped femtosecond soliton laser mode-locked by nonlinear polarization rotation,” J. Lightwave Technol. 35 , 2988–2993 (2017).
【37】P. Wang, C. Bao, B. Fu, X. Xiao, P. Grelu, and C. Yang, “Generation of wavelength-tunable soliton molecules in a 2-μm ultrafast all-fiber laser based on nonlinear polarization evolution,” Opt. Lett. 41 , 2254–2257 (2016).
【38】S. Liu, F. Yan, Y. Li, L. Zhang, Z. Bai, H. Zhou, and Y. Hou, “Noise-like pulse generation from a thulium-doped fiber laser using nonlinear polarization rotation with different net anomalous dispersion,” Photon. Res. 4 , 318–821 (2016).
Xintong Xu, Shuangchen Ruan, Jianpang Zhai, Ling Li, Jihong Pei, and Zikang Tang, "Facile active control of a pulsed erbium-doped fiber laser using modulation depth tunable carbon nanotubes," Photonics Research 6(11), 996-1002 (2018)