Abstract

We demonstrate a large-energy, wavelength-tunable, all-fiber passively Q-switched Er:Yb-codoped laser using a mono-layer chemical vapor deposition (CVD) graphene saturable absorber (SA). By exploiting the large laser gain of Er:Yb double-clad fiber and optimizing the coupling ratio of the output coupler, not only can the mono-layer CVD graphene SA be protected from oversaturation and thermal damage, but also a large pulse energy up to 1.05 μJ (corresponding to the average output power of 25.6 mW) is thus achieved. Using a tunable fiber Fabry–Perot filter, stable Q-switched pulses can operate with a tunable range from 1530.97 to 1546.92 nm, covering a wavelength range of 16nm. The Q-switching states at the different lasing wavelengths have been observed and recorded. The Q-switched repetition rate and the pulse duration (with the minimum one of 2.6 μs) have been characterized as well. This is, to the best of our knowledge, the largest pulse energy from an all-fiber graphene Q-switched laser.

© 2014 Optical Society of America

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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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  28. R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
    [CrossRef]
  29. Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
    [CrossRef]
  30. X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
    [CrossRef]
  31. A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
    [CrossRef]
  32. D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
    [CrossRef]

2014

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Y. L. Tang, X. C. Yu, X. H. Li, Z. Y. Yan, and Q. J. Wang, “High power thulium fiber laser Q-switched with single-layer graphene,” Opt. Lett. 39, 614–617 (2014).
[CrossRef]

2013

2012

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

D. P. Zhou, L. Wei, and W. K. Liu, “Tunable graphene Q-switched erbium-doped fiber laser with suppressed self-mode locking effect,” Appl. Opt. 51, 2554–2558 (2012).
[CrossRef]

Y. K. Yap, R. M. D. L. Rue, C. H. Pua, S. W. Harun, and H. Ahmad, “Graphene-based Q-switched pulsed fiber laser in a linear configuration,” Chin. Opt. Lett. 10, 041405 (2012).
[CrossRef]

W. J. Cao, H. Y. Wang, A. P. Luo, Z. C. Luo, and W. C. Xu, “Graphene-based, 50  nm wide-band tunable passively Q-switched fiber laser,” Laser Phys. Lett. 9, 54–58 (2012).
[CrossRef]

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

J. Liu, J. Xu, and P. Wang, “Graphene-based passively Q-switched 2  μm thulium-doped fiber laser,” Opt. Commun. 285, 5319–5322 (2012).
[CrossRef]

L. Wei, D. P. Zhou, H. Y. Fan, and W. K. Liu, “Graphene-based Q-switched erbium-doped fiber laser with wide pulse-repetition-rate range,” IEEE Photon. Technol. Lett. 24, 309–311 (2012).
[CrossRef]

L. Q. Zhang, Z. Zhuo, J. X. Wang, and Y. Z. Wang, “Passively Q-switched fiber laser based on graphene saturable absorber,” Laser Phys. 22, 433–436 (2012).
[CrossRef]

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, and S. C. Wen, “Switchable dual-wavelength synchronously Q-switched Erbium-doped fiber laser based on graphene saturable absorber,” IEEE Photon. J. 4, 869–876 (2012).
[CrossRef]

2011

J. Liu, S. D. Wu, Q. H. Yang, and P. Wang, “Stable nanosecond pulse generation from a graphene-based passively Q-switched Yb-doped fiber laser,” Opt. Lett. 36, 4008–4010 (2011).
[CrossRef]

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

2010

D. P. Zhou, L. Wei, B. Dong, and W. K. Liu, “Tunable passively Q-switched erbium-doped fiber laser with carbon nanotubes as a saturable absorber,” IEEE Photon. Technol. Lett. 22, 9–11 (2010).
[CrossRef]

Z. Q. Luo, M. Zhou, J. Weng, G. M. Huang, H. Y. Xu, C. C. Ye, and Z. P. Cai, “Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser,” Opt. Lett. 35, 3709–3711 (2010).
[CrossRef]

2009

J. Y. Huang, W. C. Huang, W. Z. Zhuang, K. W. Su, Y. F. Chen, and K. F. Huang, “High-pulse-energy, passively Q-switched Yb-doped fiber laser with AlGaInAs quantum wells as a saturable absorber,” Opt. Lett. 34, 2360–2362 (2009).
[CrossRef]

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

2008

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

2007

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

2006

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Abramski, K. M.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Ahmad, H.

An, J.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Balakrishnan, K.

Banerjee, S. K.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Bao, Q. L.

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Blake, P.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

Blau, W. J.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Booth, T. J.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

Cai, W. W.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Cai, Z. P.

Z. Q. Luo, Y. Z. Huang, J. Weng, H. H. Cheng, Z. Q. Lin, B. Xu, Z. P. Cai, and H. Y. Xu, “1.06  μm Q-switched ytterbium-doped fiber laser using few-layer topological insulator Bi2Se3 as a saturable absorber,” Opt. Express 21, 29516–29522 (2013).
[CrossRef]

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Z. Q. Luo, M. Zhou, J. Weng, G. M. Huang, H. Y. Xu, C. C. Ye, and Z. P. Cai, “Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser,” Opt. Lett. 35, 3709–3711 (2010).
[CrossRef]

Cao, W. J.

W. J. Cao, H. Y. Wang, A. P. Luo, Z. C. Luo, and W. C. Xu, “Graphene-based, 50  nm wide-band tunable passively Q-switched fiber laser,” Laser Phys. Lett. 9, 54–58 (2012).
[CrossRef]

Casiraghi, C.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Chen, L. J.

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Chen, S. Q.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Chen, Y.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, and S. C. Wen, “Switchable dual-wavelength synchronously Q-switched Erbium-doped fiber laser based on graphene saturable absorber,” IEEE Photon. J. 4, 869–876 (2012).
[CrossRef]

Chen, Y. F.

J. Y. Huang, W. C. Huang, W. Z. Zhuang, K. W. Su, Y. F. Chen, and K. F. Huang, “High-pulse-energy, passively Q-switched Yb-doped fiber laser with AlGaInAs quantum wells as a saturable absorber,” Opt. Lett. 34, 2360–2362 (2009).
[CrossRef]

Z. Z. Dong, H. P. Li, H. D. Xia, Y. Liu, Z. G. Wang, and Y. F. Chen, “Passively Q-switched erbium-doped fiber laser using a graphene saturable absorber,” in Asia Communications and Photonics Conference (Optical Society of America, 2012), paper AS1A.2.

Cheng, H. H.

Z. Q. Luo, Y. Z. Huang, J. Weng, H. H. Cheng, Z. Q. Lin, B. Xu, Z. P. Cai, and H. Y. Xu, “1.06  μm Q-switched ytterbium-doped fiber laser using few-layer topological insulator Bi2Se3 as a saturable absorber,” Opt. Express 21, 29516–29522 (2013).
[CrossRef]

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Cheng, J. Q.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Cho, W. B.

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Coleman, J. N.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Colombo, L.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Dong, B.

D. P. Zhou, L. Wei, B. Dong, and W. K. Liu, “Tunable passively Q-switched erbium-doped fiber laser with carbon nanotubes as a saturable absorber,” IEEE Photon. Technol. Lett. 22, 9–11 (2010).
[CrossRef]

Dong, J.

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Dong, Z. Z.

Z. Z. Dong, H. P. Li, H. D. Xia, Y. Liu, Z. G. Wang, and Y. F. Chen, “Passively Q-switched erbium-doped fiber laser using a graphene saturable absorber,” in Asia Communications and Photonics Conference (Optical Society of America, 2012), paper AS1A.2.

Du, G. G.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Du, J.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Ensslin, K.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Fan, H. Y.

L. Wei, D. P. Zhou, H. Y. Fan, and W. K. Liu, “Graphene-based Q-switched erbium-doped fiber laser with wide pulse-repetition-rate range,” IEEE Photon. Technol. Lett. 24, 309–311 (2012).
[CrossRef]

Fan, J. T.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Feng, Y.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Ferrari, A. C.

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Fu, H. Y.

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Geim, A. K.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Graf, D.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Grigorenko, A. N.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

Harun, S. W.

Hasan, T.

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Hierold, C.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Hu, J. M.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Huang, G. M.

Huang, J. Y.

Huang, K. F.

Huang, W. C.

Huang, Y. Z.

Jagiello, J.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Jiang, D.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Jiang, G. B.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Jiang, Z.

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Jung, I.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Jungen, A.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Kim, S.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Kozinski, R.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Lazzeri, M.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Li, H. P.

Z. Z. Dong, H. P. Li, H. D. Xia, Y. Liu, Z. G. Wang, and Y. F. Chen, “Passively Q-switched erbium-doped fiber laser using a graphene saturable absorber,” in Asia Communications and Photonics Conference (Optical Society of America, 2012), paper AS1A.2.

Li, L. H. P.

D. Lv, L. H. P. Li, H. D. Xia, S. J. Zhang, and Y. Liu, “Passively Q-switched linear-cavity erbium-doped fiber laser based on graphene saturable absorber,” in 12th International Conference on Optical Communications and Networks (ICOCN) (IEEE, 2013), pp. 1–3.

Li, R. H.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Li, X. H.

Li, X. S.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Librant, K.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Lin, Z. Q.

Lipinska, L.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Liu, J.

J. Liu, J. Xu, and P. Wang, “Graphene-based passively Q-switched 2  μm thulium-doped fiber laser,” Opt. Commun. 285, 5319–5322 (2012).
[CrossRef]

J. Liu, S. D. Wu, Q. H. Yang, and P. Wang, “Stable nanosecond pulse generation from a graphene-based passively Q-switched Yb-doped fiber laser,” Opt. Lett. 36, 4008–4010 (2011).
[CrossRef]

Liu, W. K.

L. Wei, D. P. Zhou, H. Y. Fan, and W. K. Liu, “Graphene-based Q-switched erbium-doped fiber laser with wide pulse-repetition-rate range,” IEEE Photon. Technol. Lett. 24, 309–311 (2012).
[CrossRef]

D. P. Zhou, L. Wei, and W. K. Liu, “Tunable graphene Q-switched erbium-doped fiber laser with suppressed self-mode locking effect,” Appl. Opt. 51, 2554–2558 (2012).
[CrossRef]

D. P. Zhou, L. Wei, B. Dong, and W. K. Liu, “Tunable passively Q-switched erbium-doped fiber laser with carbon nanotubes as a saturable absorber,” IEEE Photon. Technol. Lett. 22, 9–11 (2010).
[CrossRef]

Liu, Y.

D. Lv, L. H. P. Li, H. D. Xia, S. J. Zhang, and Y. Liu, “Passively Q-switched linear-cavity erbium-doped fiber laser based on graphene saturable absorber,” in 12th International Conference on Optical Communications and Networks (ICOCN) (IEEE, 2013), pp. 1–3.

Z. Z. Dong, H. P. Li, H. D. Xia, Y. Liu, Z. G. Wang, and Y. F. Chen, “Passively Q-switched erbium-doped fiber laser using a graphene saturable absorber,” in Asia Communications and Photonics Conference (Optical Society of America, 2012), paper AS1A.2.

Loh, K. P.

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Lotya, M.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Luo, A. P.

W. J. Cao, H. Y. Wang, A. P. Luo, Z. C. Luo, and W. C. Xu, “Graphene-based, 50  nm wide-band tunable passively Q-switched fiber laser,” Laser Phys. Lett. 9, 54–58 (2012).
[CrossRef]

Luo, J.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Luo, Z. C.

W. J. Cao, H. Y. Wang, A. P. Luo, Z. C. Luo, and W. C. Xu, “Graphene-based, 50  nm wide-band tunable passively Q-switched fiber laser,” Laser Phys. Lett. 9, 54–58 (2012).
[CrossRef]

Luo, Z. Q.

Z. Q. Luo, Y. Z. Huang, J. Weng, H. H. Cheng, Z. Q. Lin, B. Xu, Z. P. Cai, and H. Y. Xu, “1.06  μm Q-switched ytterbium-doped fiber laser using few-layer topological insulator Bi2Se3 as a saturable absorber,” Opt. Express 21, 29516–29522 (2013).
[CrossRef]

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Z. Q. Luo, M. Zhou, J. Weng, G. M. Huang, H. Y. Xu, C. C. Ye, and Z. P. Cai, “Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser,” Opt. Lett. 35, 3709–3711 (2010).
[CrossRef]

Lv, D.

D. Lv, L. H. P. Li, H. D. Xia, S. J. Zhang, and Y. Liu, “Passively Q-switched linear-cavity erbium-doped fiber laser based on graphene saturable absorber,” in 12th International Conference on Optical Communications and Networks (ICOCN) (IEEE, 2013), pp. 1–3.

Mauri, F.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Meyer, J. C.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Molitor, F.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Muhammad, F. D.

H. Ahmad, M. Z. Zulkifli, F. D. Muhammad, A. Z. Zulkifli, and S. W. Harun, “Tunable graphene-based Q-switched erbium-doped fiber laser using fiber Bragg grating,” J. Mod. Opt. 60, 202–212 (2013).
[CrossRef]

H. Ahmad, F. D. Muhammad, M. Z. Zulkifli, and S. W. Harun, “Q-switched pulse generation from an all-fiber distributed Bragg reflector laser using graphene as saturable absorber,” Chin. Opt. Lett. 11, 071401 (2013).
[CrossRef]

Nah, J.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Nair, R. R.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

Ni, Z. H.

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Norwood, R. A.

Novoselov, K. S.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Peres, N. M. R.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

Peyghambarian, N.

Piner, R.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Piscanec, S.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Popa, D.

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Pua, C. H.

Qi, W.

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Roth, S.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Ruan, S. C.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Rue, R. M. D. L.

Ruoff, R. S.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Scardaci, V.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Shen, Z. X.

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Sobon, G.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Song, F.

Sotor, J.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Stampfer, C.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Stauber, T.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

Su, K. W.

Sun, Z.

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Tang, D. Y.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Tang, P. H.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Tang, Y. L.

Torrisi, F.

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Tutuc, E.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Velamakanni, A.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Wang, F.

C. Wei, X. S. Zhu, F. Wang, Y. Xu, K. Balakrishnan, F. Song, R. A. Norwood, and N. Peyghambarian, “Graphene Q-switched 2.78  μm Er3+-doped fluoride fiber laser,” Opt. Lett. 38, 3233–3236 (2013).
[CrossRef]

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Wang, G. Z.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Wang, H. Y.

W. J. Cao, H. Y. Wang, A. P. Luo, Z. C. Luo, and W. C. Xu, “Graphene-based, 50  nm wide-band tunable passively Q-switched fiber laser,” Laser Phys. Lett. 9, 54–58 (2012).
[CrossRef]

Wang, J.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Wang, J. H.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Wang, J. X.

L. Q. Zhang, Z. Zhuo, J. X. Wang, and Y. Z. Wang, “Passively Q-switched fiber laser based on graphene saturable absorber,” Laser Phys. 22, 433–436 (2012).
[CrossRef]

Wang, J. Z.

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Wang, P.

J. Liu, J. Xu, and P. Wang, “Graphene-based passively Q-switched 2  μm thulium-doped fiber laser,” Opt. Commun. 285, 5319–5322 (2012).
[CrossRef]

J. Liu, S. D. Wu, Q. H. Yang, and P. Wang, “Stable nanosecond pulse generation from a graphene-based passively Q-switched Yb-doped fiber laser,” Opt. Lett. 36, 4008–4010 (2011).
[CrossRef]

Wang, Q. J.

Wang, Y.

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Wang, Y. Z.

L. Q. Zhang, Z. Zhuo, J. X. Wang, and Y. Z. Wang, “Passively Q-switched fiber laser based on graphene saturable absorber,” Laser Phys. 22, 433–436 (2012).
[CrossRef]

Wang, Z. G.

Z. Z. Dong, H. P. Li, H. D. Xia, Y. Liu, Z. G. Wang, and Y. F. Chen, “Passively Q-switched erbium-doped fiber laser using a graphene saturable absorber,” in Asia Communications and Photonics Conference (Optical Society of America, 2012), paper AS1A.2.

Wang, Z. T.

Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, and S. C. Wen, “Switchable dual-wavelength synchronously Q-switched Erbium-doped fiber laser based on graphene saturable absorber,” IEEE Photon. J. 4, 869–876 (2012).
[CrossRef]

Wei, C.

Wei, H. F.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Wei, L.

L. Wei, D. P. Zhou, H. Y. Fan, and W. K. Liu, “Graphene-based Q-switched erbium-doped fiber laser with wide pulse-repetition-rate range,” IEEE Photon. Technol. Lett. 24, 309–311 (2012).
[CrossRef]

D. P. Zhou, L. Wei, and W. K. Liu, “Tunable graphene Q-switched erbium-doped fiber laser with suppressed self-mode locking effect,” Appl. Opt. 51, 2554–2558 (2012).
[CrossRef]

D. P. Zhou, L. Wei, B. Dong, and W. K. Liu, “Tunable passively Q-switched erbium-doped fiber laser with carbon nanotubes as a saturable absorber,” IEEE Photon. Technol. Lett. 22, 9–11 (2010).
[CrossRef]

Wen, S. C.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, and S. C. Wen, “Switchable dual-wavelength synchronously Q-switched Erbium-doped fiber laser based on graphene saturable absorber,” IEEE Photon. J. 4, 869–876 (2012).
[CrossRef]

Weng, J.

Wirtz, L.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Wu, D. D.

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Wu, S. D.

Xia, H. D.

Z. Z. Dong, H. P. Li, H. D. Xia, Y. Liu, Z. G. Wang, and Y. F. Chen, “Passively Q-switched erbium-doped fiber laser using a graphene saturable absorber,” in Asia Communications and Photonics Conference (Optical Society of America, 2012), paper AS1A.2.

D. Lv, L. H. P. Li, H. D. Xia, S. J. Zhang, and Y. Liu, “Passively Q-switched linear-cavity erbium-doped fiber laser based on graphene saturable absorber,” in 12th International Conference on Optical Communications and Networks (ICOCN) (IEEE, 2013), pp. 1–3.

Xu, B.

Xu, H. Y.

Z. Q. Luo, Y. Z. Huang, J. Weng, H. H. Cheng, Z. Q. Lin, B. Xu, Z. P. Cai, and H. Y. Xu, “1.06  μm Q-switched ytterbium-doped fiber laser using few-layer topological insulator Bi2Se3 as a saturable absorber,” Opt. Express 21, 29516–29522 (2013).
[CrossRef]

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Z. Q. Luo, M. Zhou, J. Weng, G. M. Huang, H. Y. Xu, C. C. Ye, and Z. P. Cai, “Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser,” Opt. Lett. 35, 3709–3711 (2010).
[CrossRef]

Xu, J.

J. Liu, J. Xu, and P. Wang, “Graphene-based passively Q-switched 2  μm thulium-doped fiber laser,” Opt. Commun. 285, 5319–5322 (2012).
[CrossRef]

Xu, W. C.

W. J. Cao, H. Y. Wang, A. P. Luo, Z. C. Luo, and W. C. Xu, “Graphene-based, 50  nm wide-band tunable passively Q-switched fiber laser,” Laser Phys. Lett. 9, 54–58 (2012).
[CrossRef]

Xu, Y.

Yan, P. G.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Yan, Y. L.

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Yan, Z. Y.

Yang, D. X.

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Yang, Q. H.

Yap, Y. K.

Ye, C. C.

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Z. Q. Luo, M. Zhou, J. Weng, G. M. Huang, H. Y. Xu, C. C. Ye, and Z. P. Cai, “Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser,” Opt. Lett. 35, 3709–3711 (2010).
[CrossRef]

Yu, X. C.

Yu, Y. Q.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Zdrojek, M.

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Zhang, G. L.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Zhang, H.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, and S. C. Wen, “Switchable dual-wavelength synchronously Q-switched Erbium-doped fiber laser based on graphene saturable absorber,” IEEE Photon. J. 4, 869–876 (2012).
[CrossRef]

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Zhang, L.

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Zhang, L. Q.

L. Q. Zhang, Z. Zhuo, J. X. Wang, and Y. Z. Wang, “Passively Q-switched fiber laser based on graphene saturable absorber,” Laser Phys. 22, 433–436 (2012).
[CrossRef]

Zhang, S. J.

D. Lv, L. H. P. Li, H. D. Xia, S. J. Zhang, and Y. Liu, “Passively Q-switched linear-cavity erbium-doped fiber laser based on graphene saturable absorber,” in 12th International Conference on Optical Communications and Networks (ICOCN) (IEEE, 2013), pp. 1–3.

Zhao, C. J.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, and S. C. Wen, “Switchable dual-wavelength synchronously Q-switched Erbium-doped fiber laser based on graphene saturable absorber,” IEEE Photon. J. 4, 869–876 (2012).
[CrossRef]

Zhao, J. Q.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Zhou, D. P.

L. Wei, D. P. Zhou, H. Y. Fan, and W. K. Liu, “Graphene-based Q-switched erbium-doped fiber laser with wide pulse-repetition-rate range,” IEEE Photon. Technol. Lett. 24, 309–311 (2012).
[CrossRef]

D. P. Zhou, L. Wei, and W. K. Liu, “Tunable graphene Q-switched erbium-doped fiber laser with suppressed self-mode locking effect,” Appl. Opt. 51, 2554–2558 (2012).
[CrossRef]

D. P. Zhou, L. Wei, B. Dong, and W. K. Liu, “Tunable passively Q-switched erbium-doped fiber laser with carbon nanotubes as a saturable absorber,” IEEE Photon. Technol. Lett. 22, 9–11 (2010).
[CrossRef]

Zhou, M.

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

Z. Q. Luo, M. Zhou, J. Weng, G. M. Huang, H. Y. Xu, C. C. Ye, and Z. P. Cai, “Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser,” Opt. Lett. 35, 3709–3711 (2010).
[CrossRef]

Zhu, G. W.

Zhu, X. S.

Zhuang, W. Z.

Zhuo, Z.

L. Q. Zhang, Z. Zhuo, J. X. Wang, and Y. Z. Wang, “Passively Q-switched fiber laser based on graphene saturable absorber,” Laser Phys. 22, 433–436 (2012).
[CrossRef]

Zulkifli, A. Z.

H. Ahmad, M. Z. Zulkifli, F. D. Muhammad, A. Z. Zulkifli, and S. W. Harun, “Tunable graphene-based Q-switched erbium-doped fiber laser using fiber Bragg grating,” J. Mod. Opt. 60, 202–212 (2013).
[CrossRef]

Zulkifli, M. Z.

H. Ahmad, M. Z. Zulkifli, F. D. Muhammad, A. Z. Zulkifli, and S. W. Harun, “Tunable graphene-based Q-switched erbium-doped fiber laser using fiber Bragg grating,” J. Mod. Opt. 60, 202–212 (2013).
[CrossRef]

H. Ahmad, F. D. Muhammad, M. Z. Zulkifli, and S. W. Harun, “Q-switched pulse generation from an all-fiber distributed Bragg reflector laser using graphene as saturable absorber,” Chin. Opt. Lett. 11, 071401 (2013).
[CrossRef]

Adv. Funct. Mater.

Q. L. Bao, H. Zhang, Y. Wang, Z. H. Ni, Y. L. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, “Atomic‐layer graphene as a saturable absorber for ultrafast pulsed lasers,” Adv. Funct. Mater. 19, 3077–3083 (2009).
[CrossRef]

Appl. Opt.

Appl. Phys. Lett.

D. Popa, Z. Sun, T. Hasan, F. Torrisi, F. Wang, and A. C. Ferrari, “Graphene Q-switched, tunable fiber laser,” Appl. Phys. Lett. 98, 073106 (2011).
[CrossRef]

G. Sobon, J. Sotor, J. Jagiello, R. Kozinski, K. Librant, M. Zdrojek, L. Lipinska, and K. M. Abramski, “Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber,” Appl. Phys. Lett. 101, 241106 (2012).
[CrossRef]

Chin. Opt. Lett.

IEEE J. Lightwave Technol.

Z. Q. Luo, M. Zhou, D. D. Wu, C. C. Ye, J. Weng, J. Dong, H. Y. Xu, Z. P. Cai, and L. J. Chen, “Graphene-induced nonlinear four-wave-mixing and its application to multiwavelength Q-switched rare-earth-doped fiber lasers,” IEEE J. Lightwave Technol. 29, 2732–2739 (2011).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron.

Y. Chen, C. J. Zhao, S. Q. Chen, J. Du, P. H. Tang, G. B. Jiang, H. Zhang, S. C. Wen, and D. Y. Tang, “Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser,” IEEE J. Sel. Top. Quantum Electron. 20, 0900508 (2014).

IEEE Photon. J.

Z. T. Wang, Y. Chen, C. J. Zhao, H. Zhang, and S. C. Wen, “Switchable dual-wavelength synchronously Q-switched Erbium-doped fiber laser based on graphene saturable absorber,” IEEE Photon. J. 4, 869–876 (2012).
[CrossRef]

J. Z. Wang, Z. Q. Luo, M. Zhou, C. C. Ye, H. Y. Fu, Z. P. Cai, H. H. Cheng, H. Y. Xu, and W. Qi, “Evanescent-light deposition of graphene onto tapered fibers for passive Q-switch and mode-locker,” IEEE Photon. J. 4, 1295–1305 (2012).
[CrossRef]

IEEE Photon. Technol. Lett.

L. Wei, D. P. Zhou, H. Y. Fan, and W. K. Liu, “Graphene-based Q-switched erbium-doped fiber laser with wide pulse-repetition-rate range,” IEEE Photon. Technol. Lett. 24, 309–311 (2012).
[CrossRef]

D. P. Zhou, L. Wei, B. Dong, and W. K. Liu, “Tunable passively Q-switched erbium-doped fiber laser with carbon nanotubes as a saturable absorber,” IEEE Photon. Technol. Lett. 22, 9–11 (2010).
[CrossRef]

J. Mod. Opt.

H. Ahmad, M. Z. Zulkifli, F. D. Muhammad, A. Z. Zulkifli, and S. W. Harun, “Tunable graphene-based Q-switched erbium-doped fiber laser using fiber Bragg grating,” J. Mod. Opt. 60, 202–212 (2013).
[CrossRef]

Laser Phys.

L. Q. Zhang, Z. Zhuo, J. X. Wang, and Y. Z. Wang, “Passively Q-switched fiber laser based on graphene saturable absorber,” Laser Phys. 22, 433–436 (2012).
[CrossRef]

Laser Phys. Lett.

W. J. Cao, H. Y. Wang, A. P. Luo, Z. C. Luo, and W. C. Xu, “Graphene-based, 50  nm wide-band tunable passively Q-switched fiber laser,” Laser Phys. Lett. 9, 54–58 (2012).
[CrossRef]

L. Zhang, J. T. Fan, J. H. Wang, J. M. Hu, M. Lotya, G. Z. Wang, R. H. Li, L. Zhang, W. J. Blau, J. N. Coleman, J. Wang, and Y. Feng, “Graphene incorporated Q-switching of a polarization-maintaining Yb-doped fiber laser,” Laser Phys. Lett. 9, 888–892 (2012).

Nano Lett.

D. Graf, F. Molitor, K. Ensslin, C. Stampfer, A. Jungen, C. Hierold, and L. Wirtz, “Spatially resolved Raman spectroscopy of single-and few-layer graphene,” Nano Lett. 7, 238–242 (2007).
[CrossRef]

Opt. Commun.

J. Liu, J. Xu, and P. Wang, “Graphene-based passively Q-switched 2  μm thulium-doped fiber laser,” Opt. Commun. 285, 5319–5322 (2012).
[CrossRef]

Opt. Eng.

J. Q. Zhao, P. G. Yan, S. C. Ruan, Y. Q. Yu, G. G. Du, G. L. Zhang, J. Q. Cheng, H. F. Wei, and J. Luo, “Multi-wavelength graphene-based Q-switched erbium-doped fiber laser,” Opt. Eng. 51, 074201 (2012).
[CrossRef]

Opt. Express

Opt. Lett.

Opt. Mater. Express

Phys. Rev. Lett.

A. C. Ferrari, J. C. Meyer, V. Scardaci, C. Casiraghi, M. Lazzeri, F. Mauri, S. Piscanec, D. Jiang, K. S. Novoselov, S. Roth, and A. K. Geim, “Raman spectrum of graphene and graphene layers,” Phys. Rev. Lett. 97, 187401 (2006).
[CrossRef]

Sci. Mag.

R. R. Nair, P. Blake, A. N. Grigorenko, K. S. Novoselov, T. J. Booth, T. Stauber, N. M. R. Peres, and A. K. Geim, “Fine structure constant defines visual transparency of graphene,” Sci. Mag. 320(5881), 1308 (2008).
[CrossRef]

X. S. Li, W. W. Cai, J. An, S. Kim, J. Nah, D. X. Yang, R. Piner, A. Velamakanni, I. Jung, E. Tutuc, S. K. Banerjee, L. Colombo, and R. S. Ruoff, “Large-area synthesis of high-quality and uniform graphene films on copper foils,” Sci. Mag. 324(5932), 1312–1314 (2009).
[CrossRef]

Other

F. Wang, F. Torrisi, Z. Jiang, D. Popa, T. Hasan, Z. Sun, W. B. Cho, and A. C. Ferrari, “Graphene passively Q-switched two-micron fiber lasers,” in CLEO: Science and Innovations (Optical Society of America, 2012), paper JW2A.72.

Z. Z. Dong, H. P. Li, H. D. Xia, Y. Liu, Z. G. Wang, and Y. F. Chen, “Passively Q-switched erbium-doped fiber laser using a graphene saturable absorber,” in Asia Communications and Photonics Conference (Optical Society of America, 2012), paper AS1A.2.

D. Lv, L. H. P. Li, H. D. Xia, S. J. Zhang, and Y. Liu, “Passively Q-switched linear-cavity erbium-doped fiber laser based on graphene saturable absorber,” in 12th International Conference on Optical Communications and Networks (ICOCN) (IEEE, 2013), pp. 1–3.

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Figures (7)

Fig. 1.
Fig. 1.

Raman spectrum of graphene with photograph of the PMMA/graphene fiber ferrule.

Fig. 2.
Fig. 2.

Schematic of the EYDCF Q-switched fiber laser.

Fig. 3.
Fig. 3.

Spectra of wavelength-tunable Q-switched operation.

Fig. 4.
Fig. 4.

Output pulse train at different wavelengths: (a) 1546.92 nm, (b) 1541.35 nm, (c) 1535.52 nm, and (d) 1530.97 nm.

Fig. 5.
Fig. 5.

Output average power and pulse energy at different wavelengths within tuning range.

Fig. 6.
Fig. 6.

(a) Output spectrum and Q-switched pulse train (inset). (b) Radio-frequency optical spectrum at the fundamental frequency and the wideband RF spectrum (insert).

Fig. 7.
Fig. 7.

(a) Pulse repetition rate and average output power. (b) Single pulse energy and pulsewidth as a function of the launched pump power.

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