Abstract

We report high-power operation of a broadband superfluorescent source with an all-fiber configuration. The superfluorescent source yields an amplified spontaneous emission (ASE) output of 43.2 and 25.1W from both ends, respectively. The maximum combined ASE output is 68.3W with a slope efficiency of 78.6%. The wavelength bandwidths (FWHM) of the counterpropagating and copropagating ASE output are 31.5 and 18.9nm, respectively. The fused angle-polished side-pumping coupler is applied to set up the all-fiber configuration. Furthermore, the influence of reflectivity on the laser threshold of the ASE sources is studied theoretically. The experimental results agree with the theoretical analysis.

© 2011 Optical Society of America

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    [CrossRef]
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    [CrossRef]
  4. W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
    [CrossRef]
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    [CrossRef]
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2011 (1)

Q. Xiao, P. Yan, S. Yin, J. Hao, and M. Gong, “100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration,” Laser Phys. Lett. 8, 125–129 (2011).
[CrossRef]

2008 (4)

Z. C. Hsu, Z. S. Peng, L. A. Wang, R. Y. Liu, and F. I. Chou, “Gamma ray effects on double pass backward superfluorescent fiber sources for gyroscope applications,” Proc. SPIE 7004, 70044M (2008).
[CrossRef]

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

V. Filippov, Y. Chamorovskii, J. Kerttula, K. Golant, M. Pessa, and O. G. Okhotnikov, “Double clad tapered fiber for high power applications,” Opt. Express 16, 1929–1944 (2008).
[CrossRef] [PubMed]

D. Y. Shen, L. Pearson, P. Wang, J. K. Sahu, and W. A. Clarkson, “Broadband Tm-doped superfluorescent fiber source with 11 W single-ended output power,” Opt. Express 16, 11021–11026 (2008).
[CrossRef] [PubMed]

2007 (3)

2006 (2)

S. P. Chen, Y. G. Li, J. P. Zhu, H. Wang, and K. C. Lu, “Dual-stage superfluorescent fiber source with 1.16 W output power centered at 1561 nm,” Opt. Eng. 45055003 (2006).
[CrossRef]

P. Wang, J. K. Sahu, and W. A. Clarkson, “110 W double-ended ytterbium-doped fiber superfluorescent source with M2=1.6,” Opt. Lett. 31, 3116–3118 (2006).
[CrossRef] [PubMed]

2004 (1)

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

2002 (1)

2001 (1)

1999 (1)

1998 (1)

1995 (1)

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

1991 (2)

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

C. R. Giles and E. Desurvire, “Modeling erbium-doped fiber amplifiers,” J. Lightwave Technol. 9, 271–283 (1991).
[CrossRef]

Avram, E.

Barber, P. R.

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

Bekker, A.

B. Levit, A. Bekker, V. Smulakovsky, and B. Fischer, “Amplified-spontaneous-emission pumped Raman fiber laser,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest Series (Optical Society of America, 2009), paper JThE73.

Berendt, M. O.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Burns, W. K.

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

Caldas, P.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Carman, R. J.

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

Chamorovskii, Y.

Chanclou, P.

Chen, S. P.

S. P. Chen, Y. G. Li, J. P. Zhu, H. Wang, and K. C. Lu, “Dual-stage superfluorescent fiber source with 1.16 W output power centered at 1561 nm,” Opt. Eng. 45055003 (2006).
[CrossRef]

Chou, F. I.

Z. C. Hsu, Z. S. Peng, L. A. Wang, R. Y. Liu, and F. I. Chou, “Gamma ray effects on double pass backward superfluorescent fiber sources for gyroscope applications,” Proc. SPIE 7004, 70044M (2008).
[CrossRef]

Clarkson, W. A.

Dawes, J. M.

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

Desurvire, E.

C. R. Giles and E. Desurvire, “Modeling erbium-doped fiber amplifiers,” J. Lightwave Technol. 9, 271–283 (1991).
[CrossRef]

Dong, X.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Duling, I. N.

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

Fan, W.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Filippov, V.

Fischer, B.

B. Levit, A. Bekker, V. Smulakovsky, and B. Fischer, “Amplified-spontaneous-emission pumped Raman fiber laser,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest Series (Optical Society of America, 2009), paper JThE73.

Fu, S.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Giles, C. R.

C. R. Giles and E. Desurvire, “Modeling erbium-doped fiber amplifiers,” J. Lightwave Technol. 9, 271–283 (1991).
[CrossRef]

Golant, K.

Goldberg, L.

L. Goldberg, J. P. Koplow, R. P. Moeller, and D. A. V. Kliner, “High-power superfluorescent source with a side-pumped Yb-doped double-cladding fiber,” Opt. Lett. 23, 1037–1039(1998).
[CrossRef]

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

Gong, M.

Q. Xiao, P. Yan, S. Yin, J. Hao, and M. Gong, “100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration,” Laser Phys. Lett. 8, 125–129 (2011).
[CrossRef]

M. Gong, Y. Yuan, C. Li, P. Yan, H. Zhang, and S. Liao, “Numerical modeling of transverse mode competition in strongly pumped multimode fiber lasers and amplifiers,” Opt. Express 15, 3236–3246 (2007).
[CrossRef] [PubMed]

Hanna, D. C.

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

Hao, J.

Q. Xiao, P. Yan, S. Yin, J. Hao, and M. Gong, “100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration,” Laser Phys. Lett. 8, 125–129 (2011).
[CrossRef]

Hardy, A. A.

Hsu, Z. C.

Z. C. Hsu, Z. S. Peng, L. A. Wang, R. Y. Liu, and F. I. Chou, “Gamma ray effects on double pass backward superfluorescent fiber sources for gyroscope applications,” Proc. SPIE 7004, 70044M (2008).
[CrossRef]

Iostec, J.

Kerttula, J.

Kliner, D. A. V.

Koplow, J. P.

Levit, B.

B. Levit, A. Bekker, V. Smulakovsky, and B. Fischer, “Amplified-spontaneous-emission pumped Raman fiber laser,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest Series (Optical Society of America, 2009), paper JThE73.

Li, C.

Li, L.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Li, Y. G.

S. P. Chen, Y. G. Li, J. P. Zhu, H. Wang, and K. C. Lu, “Dual-stage superfluorescent fiber source with 1.16 W output power centered at 1561 nm,” Opt. Eng. 45055003 (2006).
[CrossRef]

Liao, S.

Liu, R. Y.

Z. C. Hsu, Z. S. Peng, L. A. Wang, R. Y. Liu, and F. I. Chou, “Gamma ray effects on double pass backward superfluorescent fiber sources for gyroscope applications,” Proc. SPIE 7004, 70044M (2008).
[CrossRef]

Lu, K. C.

S. P. Chen, Y. G. Li, J. P. Zhu, H. Wang, and K. C. Lu, “Dual-stage superfluorescent fiber source with 1.16 W output power centered at 1561 nm,” Opt. Eng. 45055003 (2006).
[CrossRef]

Mackechnie, C. J.

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

Mahmood, W.

Moeller, R. P.

L. Goldberg, J. P. Koplow, R. P. Moeller, and D. A. V. Kliner, “High-power superfluorescent source with a side-pumped Yb-doped double-cladding fiber,” Opt. Lett. 23, 1037–1039(1998).
[CrossRef]

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

Neagu, L.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Ning, D.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Okhotnikov, O. G.

Oron, R.

Ozer, M.

Pask, H. M.

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

Pearson, L.

Peng, Z. S.

Z. C. Hsu, Z. S. Peng, L. A. Wang, R. Y. Liu, and F. I. Chou, “Gamma ray effects on double pass backward superfluorescent fiber sources for gyroscope applications,” Proc. SPIE 7004, 70044M (2008).
[CrossRef]

Pessa, M.

Po, H.

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

Podoleanu, A. G.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Ribeiro, A. B. L.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Romero, R.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Sahu, J. K.

Salcedo, J. R.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Shen, D. Y.

Smulakovsky, V.

B. Levit, A. Bekker, V. Smulakovsky, and B. Fischer, “Amplified-spontaneous-emission pumped Raman fiber laser,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest Series (Optical Society of America, 2009), paper JThE73.

Snitzer, E.

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

Thual, M.

Trifanov, I.

I. Trifanov, P. Caldas, L. Neagu, R. Romero, M. O. Berendt, J. R. Salcedo, A. G. Podoleanu, and A. B. L. Ribeiro, “20 mW, 70 nm bandwidth ASE fibre optic source at 1060 nm wavelength region for optical coherence tomography,” Proc. SPIE 7580, 75800O (2008).
[CrossRef]

Tropper, A. C.

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

Villarruel, C. A.

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

Wang, H.

S. P. Chen, Y. G. Li, J. P. Zhu, H. Wang, and K. C. Lu, “Dual-stage superfluorescent fiber source with 1.16 W output power centered at 1561 nm,” Opt. Eng. 45055003 (2006).
[CrossRef]

Wang, L. A.

Z. C. Hsu, Z. S. Peng, L. A. Wang, R. Y. Liu, and F. I. Chou, “Gamma ray effects on double pass backward superfluorescent fiber sources for gyroscope applications,” Proc. SPIE 7004, 70044M (2008).
[CrossRef]

Wang, P.

Wang, Z.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Xiao, Q.

Q. Xiao, P. Yan, S. Yin, J. Hao, and M. Gong, “100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration,” Laser Phys. Lett. 8, 125–129 (2011).
[CrossRef]

Yan, P.

Q. Xiao, P. Yan, S. Yin, J. Hao, and M. Gong, “100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration,” Laser Phys. Lett. 8, 125–129 (2011).
[CrossRef]

M. Gong, Y. Yuan, C. Li, P. Yan, H. Zhang, and S. Liao, “Numerical modeling of transverse mode competition in strongly pumped multimode fiber lasers and amplifiers,” Opt. Express 15, 3236–3246 (2007).
[CrossRef] [PubMed]

Yang, X.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Yin, S.

Q. Xiao, P. Yan, S. Yin, J. Hao, and M. Gong, “100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration,” Laser Phys. Lett. 8, 125–129 (2011).
[CrossRef]

Yuan, S.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Yuan, Y.

Zhang, H.

Zhang, Q.

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

Zhu, J. P.

S. P. Chen, Y. G. Li, J. P. Zhu, H. Wang, and K. C. Lu, “Dual-stage superfluorescent fiber source with 1.16 W output power centered at 1561 nm,” Opt. Eng. 45055003 (2006).
[CrossRef]

Appl. Opt. (1)

IEEE J. Quantum Electron. (1)

I. N. Duling III, R. P. Moeller, W. K. Burns, C. A. Villarruel, L. Goldberg, E. Snitzer, and H. Po, “Output characteristics of diode pumped fiber ASE sources,” IEEE J. Quantum Electron. 27, 995–1003 (1991).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (2)

P. Wang, J. K. Sahu, and W. A. Clarkson, “Power scaling of ytterbium-doped fiber superfluorescent sources,” IEEE J. Sel. Top. Quantum Electron. 13, 580–587 (2007).
[CrossRef]

H. M. Pask, R. J. Carman, D. C. Hanna, A. C. Tropper, C. J. Mackechnie, P. R. Barber, and J. M. Dawes, “Ytterbium-doped silica fiber lasers: versatile sources for the 1–1.2 pm region,” IEEE J. Sel. Top. Quantum Electron. 1, 2–13 (1995).
[CrossRef]

J. Lightwave Technol. (2)

E. Avram, W. Mahmood, and M. Ozer, “Quantification of scattering from fiber surface irregularities,” J. Lightwave Technol. 20, 634–637 (2002).
[CrossRef]

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Laser Phys. Lett. (1)

Q. Xiao, P. Yan, S. Yin, J. Hao, and M. Gong, “100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration,” Laser Phys. Lett. 8, 125–129 (2011).
[CrossRef]

Opt. Eng. (1)

S. P. Chen, Y. G. Li, J. P. Zhu, H. Wang, and K. C. Lu, “Dual-stage superfluorescent fiber source with 1.16 W output power centered at 1561 nm,” Opt. Eng. 45055003 (2006).
[CrossRef]

Opt. Express (3)

Opt. Lett. (3)

Proc. SPIE (2)

Z. C. Hsu, Z. S. Peng, L. A. Wang, R. Y. Liu, and F. I. Chou, “Gamma ray effects on double pass backward superfluorescent fiber sources for gyroscope applications,” Proc. SPIE 7004, 70044M (2008).
[CrossRef]

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[CrossRef]

Other (3)

W. Fan, S. Fu, X. Yang, D. Ning, Z. Wang, L. Li, Q. Zhang, S. Yuan, and X. Dong, “High-power broadband superfluorescent source with a Yb-doped double-cladding fiber,” Proc. SPIE 5280, 225–228 (2004).
[CrossRef]

B. Levit, A. Bekker, V. Smulakovsky, and B. Fischer, “Amplified-spontaneous-emission pumped Raman fiber laser,” in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest Series (Optical Society of America, 2009), paper JThE73.

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Figures (6)

Fig. 1
Fig. 1

Schematic drawing of the laser with fused angle-polished side-pumping configuration.

Fig. 2
Fig. 2

Images captured by a 1000 × microscope and white light interferometer, respectively.

Fig. 3
Fig. 3

Output power versus launched pump power for the Yb-doped fiber ASE source.

Fig. 4
Fig. 4

Emission spectra for the Yb-doped fiber ASE source: (a) counterpropagating and (b) copropagating ASE.

Fig. 5
Fig. 5

GR versus pump power for different reflectivities of the fiber ends: (a) 40, (b) 50, (c) 55, and (d)  60 dB .

Fig. 6
Fig. 6

Maximum pump power versus reflectivity of the fiber ends.

Equations (5)

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g ( z , λ ) = Γ s { [ σ e ( λ ) + σ a ( λ ) ] N 2 ( z ) σ a ( λ ) N } α ( λ ) ,
G ( λ ) = 0 L g ( z , λ ) d z ,
G max = max ( G ( λ ) ) = G ( λ 0 ) .
G R = R 1 R 2 e 2 G max ,
Γ i = 0 2 π 0 a dope I ( r , φ ) r d r d φ ,

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