Abstract

We investigated a dispersion-managed, passively mode-locked, ultrashort-pulse, Er-doped fiber laser using a polyimide film containing dispersed single-wall carbon nanotubes (SWNTs) and examined the dependence on net cavity dispersion and output coupling ratio using normal-dispersion fibers and a variable output coupler. For the dissipative soliton mode-locking condition, we achieved a pulse energy of 3.5 nJ and an average power of 114 mW, the highest values yet reported for an SWNT fiber laser under single-pulse operation.

© 2011 OSA

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  1. S. Y. Set, H. Yamaguchi, Y. Tanaka, M. Jablonski, Y. Sakakibara, A. Rozhin, M. Tokumoto, H. Kataura, Y. Achiba, and K. Kikuchi, “Mode-locked fiber lasers based on a saturable absorber incorporating carbon nanotubes,” in Optical Fiber Communication Conference 2003, Technical Digest (Optical Society of America, 2003), paper PD44.
  2. S. Yamashita, Y. Inoue, S. Maruyama, Y. Murakami, H. Yaguchi, M. Jablonski, and S. Y. Set, “Saturable absorbers incorporating carbon nanotubes directly synthesized onto substrates and fibers and their application to mode-locked fiber lasers,” Opt. Lett. 29(14), 1581–1583 (2004).
    [CrossRef] [PubMed]
  3. Y. Sakakibara, K. Kintaka, A. G. Rozhin, T. Itatani, W. M. Soe, H. Itatani, M. Tokumoto, and H. Kataura, “Optically uniform carbon nanotube-polyimide nanocomposite: application to 165 fs mode-locked fiber laser and waveguide,” in 31st European Conference on Optical Communication, 2005. ECOC 2005 (2005), Vol. 1, pp. 37–38.
  4. A. G. Rozhin, Y. Sakakibara, S. Namiki, M. Tokumoto, H. Kataura, and Y. Achiba, “Sub-200-fs pulsed erbium-doped fiber laser using a carbon nanotube-polyvinylalcohol mode locker,” Appl. Phys. Lett. 88(5), 051118 (2006).
    [CrossRef]
  5. M. Nakazawa, S. Nakahara, T. Hirooka, M. Yoshida, T. Kaino, and K. Komatsu, “Polymer saturable absorber materials in the 1.5 ?m band using poly-methyl-methacrylate and polystyrene with single-wall carbon nanotubes and their application to a femtosecond laser,” Opt. Lett. 31(7), 915–917 (2006).
    [CrossRef] [PubMed]
  6. Y. W. Song, S. Yamashita, C. S. Goh, and S. Y. Set, “Carbon nanotube mode lockers with enhanced nonlinearity via evanescent field interaction in D-shaped fibers,” Opt. Lett. 32(2), 148–150 (2007).
    [CrossRef] [PubMed]
  7. J. W. Nicholson, R. S. Windeler, and D. J. Digiovanni, “Optically driven deposition of single-walled carbon-nanotube saturable absorbers on optical fiber end-faces,” Opt. Express 15(15), 9176–9183 (2007).
    [CrossRef] [PubMed]
  8. K. Kieu and M. Mansuripur, “Femtosecond laser pulse generation with a fiber taper embedded in carbon nanotube/polymer composite,” Opt. Lett. 32(15), 2242–2244 (2007).
    [CrossRef] [PubMed]
  9. Y. W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
    [CrossRef]
  10. N. Nishizawa, Y. Seno, K. Sumimura, Y. Sakakibara, E. Itoga, H. Kataura, and K. Itoh, “All-polarization-maintaining Er-doped ultrashort-pulse fiber laser using carbon nanotube saturable absorber,” Opt. Express 16(13), 9429–9435 (2008).
    [CrossRef] [PubMed]
  11. F. Shohda, T. Shirato, M. Nakazawa, J. Mata, and J. Tsukamoto, “147 fs, 51 MHz soliton fiber laser at 1.56 microm with a fiber-connector-type SWNT/P3HT saturable absorber,” Opt. Express 16(25), 20943–20948 (2008).
    [CrossRef] [PubMed]
  12. M. A. Solodyankin, E. D. Obraztsova, A. S. Lobach, A. I. Chernov, A. V. Tausenev, V. I. Konov, and E. M. Dianov, “Mode-locked 1.93 microm thulium fiber laser with a carbon nanotube absorber,” Opt. Lett. 33(12), 1336–1338 (2008).
    [CrossRef] [PubMed]
  13. Y. Senoo, N. Nishizawa, Y. Sakakibara, K. Sumimura, E. Itoga, H. Kataura, and K. Itoh, “Polarization-maintaining, high-energy, wavelength-tunable, Er-doped ultrashort pulse fiber laser using carbon-nanotube polyimide film,” Opt. Express 17(22), 20233–20241 (2009).
    [CrossRef] [PubMed]
  14. S. Kivistö, T. Hakulinen, A. Kaskela, B. Aitchison, D. P. Brown, A. G. Nasibulin, E. I. Kauppinen, A. Härkönen, and O. G. Okhotnikov, “Carbon nanotube films for ultrafast broadband technology,” Opt. Express 17(4), 2358–2363 (2009).
    [CrossRef] [PubMed]
  15. F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
    [CrossRef] [PubMed]
  16. J. H. Im, S. Y. Choi, F. Rotermund, and D. I. Yeom, “All-fiber Er-doped dissipative soliton laser based on evanescent field interaction with carbon nanotube saturable absorber,” Opt. Express 18(21), 22141–22146 (2010).
    [CrossRef] [PubMed]
  17. K. Tamura, E. P. Ippen, H. A. Haus, and L. E. Nelson, “77-fs pulse generation from a stretched-pulse mode-locked all-fiber ring laser,” Opt. Lett. 18(13), 1080–1082 (1993).
    [CrossRef] [PubMed]
  18. F. O. Ilday, J. R. Buckley, W. G. Clark, and F. W. Wise, “Self-similar evolution of parabolic pulses in a laser,” Phys. Rev. Lett. 92(21), 213902 (2004).
    [CrossRef] [PubMed]
  19. A. Chong, J. Buckley, W. Renninger, and F. Wise, “All-normal-dispersion femtosecond fiber laser,” Opt. Express 14(21), 10095–10100 (2006).
    [CrossRef] [PubMed]
  20. K. Kieu and F. W. Wise, “Self-similar and stretched-pulse operation of erbium-doped fiber lasers with carbon nanotubes saturable absorber,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper CML3
  21. A. Chong, W. H. Renninger, and F. W. Wise, “Properties of normal-dispersion femtosecond fiber lasers,” J. Opt. Soc. Am. B 25(2), 140–148 (2008).
    [CrossRef]
  22. A. Cabasse, B. Ortaç, G. Martel, A. Hideur, and J. Limpert, “Dissipative solitons in a passively mode-locked Er-doped fiber with strong normal dispersion,” Opt. Express 16(23), 19322–19329 (2008).
    [CrossRef] [PubMed]
  23. B. G. Bale, S. Boscolo, and S. K. Turitsyn, “Dissipative dispersion-managed solitons in mode-locked lasers,” Opt. Lett. 34(21), 3286–3288 (2009).
    [CrossRef] [PubMed]
  24. R. Gumenyuk, I. Vartiainen, H. Tuovinen, and O. G. Okhotnikov, “Dissipative dispersion-managed soliton 2 ?m thulium/holmium fiber laser,” Opt. Lett. 36(5), 609–611 (2011).
    [CrossRef] [PubMed]

2011

2010

2009

2008

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

A. Chong, W. H. Renninger, and F. W. Wise, “Properties of normal-dispersion femtosecond fiber lasers,” J. Opt. Soc. Am. B 25(2), 140–148 (2008).
[CrossRef]

A. Cabasse, B. Ortaç, G. Martel, A. Hideur, and J. Limpert, “Dissipative solitons in a passively mode-locked Er-doped fiber with strong normal dispersion,” Opt. Express 16(23), 19322–19329 (2008).
[CrossRef] [PubMed]

Y. W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[CrossRef]

N. Nishizawa, Y. Seno, K. Sumimura, Y. Sakakibara, E. Itoga, H. Kataura, and K. Itoh, “All-polarization-maintaining Er-doped ultrashort-pulse fiber laser using carbon nanotube saturable absorber,” Opt. Express 16(13), 9429–9435 (2008).
[CrossRef] [PubMed]

F. Shohda, T. Shirato, M. Nakazawa, J. Mata, and J. Tsukamoto, “147 fs, 51 MHz soliton fiber laser at 1.56 microm with a fiber-connector-type SWNT/P3HT saturable absorber,” Opt. Express 16(25), 20943–20948 (2008).
[CrossRef] [PubMed]

M. A. Solodyankin, E. D. Obraztsova, A. S. Lobach, A. I. Chernov, A. V. Tausenev, V. I. Konov, and E. M. Dianov, “Mode-locked 1.93 microm thulium fiber laser with a carbon nanotube absorber,” Opt. Lett. 33(12), 1336–1338 (2008).
[CrossRef] [PubMed]

2007

2006

2004

1993

Achiba, Y.

A. G. Rozhin, Y. Sakakibara, S. Namiki, M. Tokumoto, H. Kataura, and Y. Achiba, “Sub-200-fs pulsed erbium-doped fiber laser using a carbon nanotube-polyvinylalcohol mode locker,” Appl. Phys. Lett. 88(5), 051118 (2006).
[CrossRef]

Aitchison, B.

Bale, B. G.

Boscolo, S.

Brown, D. P.

Buckley, J.

Buckley, J. R.

F. O. Ilday, J. R. Buckley, W. G. Clark, and F. W. Wise, “Self-similar evolution of parabolic pulses in a laser,” Phys. Rev. Lett. 92(21), 213902 (2004).
[CrossRef] [PubMed]

Cabasse, A.

Chernov, A. I.

Choi, S. Y.

Chong, A.

Clark, W. G.

F. O. Ilday, J. R. Buckley, W. G. Clark, and F. W. Wise, “Self-similar evolution of parabolic pulses in a laser,” Phys. Rev. Lett. 92(21), 213902 (2004).
[CrossRef] [PubMed]

Dianov, E. M.

Digiovanni, D. J.

Ferrari, A. C.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

Goh, C. S.

Gumenyuk, R.

Hakulinen, T.

Härkönen, A.

Haus, H. A.

Hennrich, F.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

Hideur, A.

Hirooka, T.

Ilday, F. O.

F. O. Ilday, J. R. Buckley, W. G. Clark, and F. W. Wise, “Self-similar evolution of parabolic pulses in a laser,” Phys. Rev. Lett. 92(21), 213902 (2004).
[CrossRef] [PubMed]

Im, J. H.

Inoue, Y.

Ippen, E. P.

Itoga, E.

Itoh, K.

Jablonski, M.

Kaino, T.

Kaskela, A.

Kataura, H.

Kauppinen, E. I.

Kieu, K.

Kivistö, S.

Komatsu, K.

Konov, V. I.

Limpert, J.

Lobach, A. S.

Mansuripur, M.

Martel, G.

Maruyama, S.

Mata, J.

Milne, W. I.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

Murakami, Y.

Nakahara, S.

Nakazawa, M.

Namiki, S.

A. G. Rozhin, Y. Sakakibara, S. Namiki, M. Tokumoto, H. Kataura, and Y. Achiba, “Sub-200-fs pulsed erbium-doped fiber laser using a carbon nanotube-polyvinylalcohol mode locker,” Appl. Phys. Lett. 88(5), 051118 (2006).
[CrossRef]

Nasibulin, A. G.

Nelson, L. E.

Nicholson, J. W.

Nishizawa, N.

Obraztsova, E. D.

Okhotnikov, O. G.

Ortaç, B.

Renninger, W.

Renninger, W. H.

Rotermund, F.

Rozhin, A. G.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

A. G. Rozhin, Y. Sakakibara, S. Namiki, M. Tokumoto, H. Kataura, and Y. Achiba, “Sub-200-fs pulsed erbium-doped fiber laser using a carbon nanotube-polyvinylalcohol mode locker,” Appl. Phys. Lett. 88(5), 051118 (2006).
[CrossRef]

Sakakibara, Y.

Scardaci, V.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

Seno, Y.

Senoo, Y.

Set, S. Y.

Shirato, T.

Shohda, F.

Solodyankin, M. A.

Song, Y. W.

Y. W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[CrossRef]

Y. W. Song, S. Yamashita, C. S. Goh, and S. Y. Set, “Carbon nanotube mode lockers with enhanced nonlinearity via evanescent field interaction in D-shaped fibers,” Opt. Lett. 32(2), 148–150 (2007).
[CrossRef] [PubMed]

Sumimura, K.

Sun, Z.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

Tamura, K.

Tausenev, A. V.

Tokumoto, M.

A. G. Rozhin, Y. Sakakibara, S. Namiki, M. Tokumoto, H. Kataura, and Y. Achiba, “Sub-200-fs pulsed erbium-doped fiber laser using a carbon nanotube-polyvinylalcohol mode locker,” Appl. Phys. Lett. 88(5), 051118 (2006).
[CrossRef]

Tsukamoto, J.

Tuovinen, H.

Turitsyn, S. K.

Vartiainen, I.

Wang, F.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

White, I. H.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

Windeler, R. S.

Wise, F.

Wise, F. W.

A. Chong, W. H. Renninger, and F. W. Wise, “Properties of normal-dispersion femtosecond fiber lasers,” J. Opt. Soc. Am. B 25(2), 140–148 (2008).
[CrossRef]

F. O. Ilday, J. R. Buckley, W. G. Clark, and F. W. Wise, “Self-similar evolution of parabolic pulses in a laser,” Phys. Rev. Lett. 92(21), 213902 (2004).
[CrossRef] [PubMed]

Yaguchi, H.

Yamashita, S.

Yeom, D. I.

Yoshida, M.

Appl. Phys. Lett.

A. G. Rozhin, Y. Sakakibara, S. Namiki, M. Tokumoto, H. Kataura, and Y. Achiba, “Sub-200-fs pulsed erbium-doped fiber laser using a carbon nanotube-polyvinylalcohol mode locker,” Appl. Phys. Lett. 88(5), 051118 (2006).
[CrossRef]

Y. W. Song, S. Yamashita, and S. Maruyama, “Single-walled carbon nanotubes for high-energy optical pulse formation,” Appl. Phys. Lett. 92(2), 021115 (2008).
[CrossRef]

J. Opt. Soc. Am. B

Nat. Nanotechnol.

F. Wang, A. G. Rozhin, V. Scardaci, Z. Sun, F. Hennrich, I. H. White, W. I. Milne, and A. C. Ferrari, “Wideband-tuneable, nanotube mode-locked, fibre laser,” Nat. Nanotechnol. 3(12), 738–742 (2008).
[CrossRef] [PubMed]

Opt. Express

J. H. Im, S. Y. Choi, F. Rotermund, and D. I. Yeom, “All-fiber Er-doped dissipative soliton laser based on evanescent field interaction with carbon nanotube saturable absorber,” Opt. Express 18(21), 22141–22146 (2010).
[CrossRef] [PubMed]

J. W. Nicholson, R. S. Windeler, and D. J. Digiovanni, “Optically driven deposition of single-walled carbon-nanotube saturable absorbers on optical fiber end-faces,” Opt. Express 15(15), 9176–9183 (2007).
[CrossRef] [PubMed]

Y. Senoo, N. Nishizawa, Y. Sakakibara, K. Sumimura, E. Itoga, H. Kataura, and K. Itoh, “Polarization-maintaining, high-energy, wavelength-tunable, Er-doped ultrashort pulse fiber laser using carbon-nanotube polyimide film,” Opt. Express 17(22), 20233–20241 (2009).
[CrossRef] [PubMed]

S. Kivistö, T. Hakulinen, A. Kaskela, B. Aitchison, D. P. Brown, A. G. Nasibulin, E. I. Kauppinen, A. Härkönen, and O. G. Okhotnikov, “Carbon nanotube films for ultrafast broadband technology,” Opt. Express 17(4), 2358–2363 (2009).
[CrossRef] [PubMed]

N. Nishizawa, Y. Seno, K. Sumimura, Y. Sakakibara, E. Itoga, H. Kataura, and K. Itoh, “All-polarization-maintaining Er-doped ultrashort-pulse fiber laser using carbon nanotube saturable absorber,” Opt. Express 16(13), 9429–9435 (2008).
[CrossRef] [PubMed]

F. Shohda, T. Shirato, M. Nakazawa, J. Mata, and J. Tsukamoto, “147 fs, 51 MHz soliton fiber laser at 1.56 microm with a fiber-connector-type SWNT/P3HT saturable absorber,” Opt. Express 16(25), 20943–20948 (2008).
[CrossRef] [PubMed]

A. Cabasse, B. Ortaç, G. Martel, A. Hideur, and J. Limpert, “Dissipative solitons in a passively mode-locked Er-doped fiber with strong normal dispersion,” Opt. Express 16(23), 19322–19329 (2008).
[CrossRef] [PubMed]

A. Chong, J. Buckley, W. Renninger, and F. Wise, “All-normal-dispersion femtosecond fiber laser,” Opt. Express 14(21), 10095–10100 (2006).
[CrossRef] [PubMed]

Opt. Lett.

B. G. Bale, S. Boscolo, and S. K. Turitsyn, “Dissipative dispersion-managed solitons in mode-locked lasers,” Opt. Lett. 34(21), 3286–3288 (2009).
[CrossRef] [PubMed]

R. Gumenyuk, I. Vartiainen, H. Tuovinen, and O. G. Okhotnikov, “Dissipative dispersion-managed soliton 2 ?m thulium/holmium fiber laser,” Opt. Lett. 36(5), 609–611 (2011).
[CrossRef] [PubMed]

M. A. Solodyankin, E. D. Obraztsova, A. S. Lobach, A. I. Chernov, A. V. Tausenev, V. I. Konov, and E. M. Dianov, “Mode-locked 1.93 microm thulium fiber laser with a carbon nanotube absorber,” Opt. Lett. 33(12), 1336–1338 (2008).
[CrossRef] [PubMed]

M. Nakazawa, S. Nakahara, T. Hirooka, M. Yoshida, T. Kaino, and K. Komatsu, “Polymer saturable absorber materials in the 1.5 ?m band using poly-methyl-methacrylate and polystyrene with single-wall carbon nanotubes and their application to a femtosecond laser,” Opt. Lett. 31(7), 915–917 (2006).
[CrossRef] [PubMed]

Y. W. Song, S. Yamashita, C. S. Goh, and S. Y. Set, “Carbon nanotube mode lockers with enhanced nonlinearity via evanescent field interaction in D-shaped fibers,” Opt. Lett. 32(2), 148–150 (2007).
[CrossRef] [PubMed]

S. Yamashita, Y. Inoue, S. Maruyama, Y. Murakami, H. Yaguchi, M. Jablonski, and S. Y. Set, “Saturable absorbers incorporating carbon nanotubes directly synthesized onto substrates and fibers and their application to mode-locked fiber lasers,” Opt. Lett. 29(14), 1581–1583 (2004).
[CrossRef] [PubMed]

K. Kieu and M. Mansuripur, “Femtosecond laser pulse generation with a fiber taper embedded in carbon nanotube/polymer composite,” Opt. Lett. 32(15), 2242–2244 (2007).
[CrossRef] [PubMed]

K. Tamura, E. P. Ippen, H. A. Haus, and L. E. Nelson, “77-fs pulse generation from a stretched-pulse mode-locked all-fiber ring laser,” Opt. Lett. 18(13), 1080–1082 (1993).
[CrossRef] [PubMed]

Phys. Rev. Lett.

F. O. Ilday, J. R. Buckley, W. G. Clark, and F. W. Wise, “Self-similar evolution of parabolic pulses in a laser,” Phys. Rev. Lett. 92(21), 213902 (2004).
[CrossRef] [PubMed]

Other

Y. Sakakibara, K. Kintaka, A. G. Rozhin, T. Itatani, W. M. Soe, H. Itatani, M. Tokumoto, and H. Kataura, “Optically uniform carbon nanotube-polyimide nanocomposite: application to 165 fs mode-locked fiber laser and waveguide,” in 31st European Conference on Optical Communication, 2005. ECOC 2005 (2005), Vol. 1, pp. 37–38.

K. Kieu and F. W. Wise, “Self-similar and stretched-pulse operation of erbium-doped fiber lasers with carbon nanotubes saturable absorber,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper CML3

S. Y. Set, H. Yamaguchi, Y. Tanaka, M. Jablonski, Y. Sakakibara, A. Rozhin, M. Tokumoto, H. Kataura, Y. Achiba, and K. Kikuchi, “Mode-locked fiber lasers based on a saturable absorber incorporating carbon nanotubes,” in Optical Fiber Communication Conference 2003, Technical Digest (Optical Society of America, 2003), paper PD44.

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Figures (7)

Fig. 1
Fig. 1

Configuration of passively mode-locked, Er-doped ultrashort-pulse fiber laser with SWNT polyimide film. WDM, wavelength-division-multiplexed coupler; EDF, Er-doped fiber; PBC, polarization beam combiner; NDF, normal-dispersion fiber.

Fig. 2
Fig. 2

Saturable absorption property of SWNT polyimide film used in this work.

Fig. 3
Fig. 3

Spectra and spectral phase of output pulses when the net cavity dispersion, DT, was (a) –0.032 ps2, (b) +0.017 ps2, and (c) +0.098 ps2.

Fig. 4
Fig. 4

Dependence of output pulses on the net cavity dispersion, DT.

Fig. 5
Fig. 5

Dependence on output coupling ration for (a) maximum output power and (b) spectral width.

Fig. 6
Fig. 6

Output performance for η = 95% and DT = +0.098 ps2. (a) Output power and operation mode as a function of pump power, (b) spectral shape and spectral phase, (c) pulse train, and (d) temporal shape and temporal phase.

Fig. 7
Fig. 7

Observed RF spectra for η = 95% and DT = +0.098 ps2 for (a) 0–500 MHz region and (b) fundamental frequency component of 33.8 MHz.

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