Abstract

We demonstrate for the first time a flat-top mode from a 50 µm-core Yb-doped leakage channel fiber (LCF). The flat intensity distribution leads to an effective mode area of ~1880 µm2 in the straight fiber, an over 50% increase comparing to that of regular LCF with the same core diameter. The flat-top mode was achieved by using a uniform Yb-doped silica glass in the core center with an index of ~2 × 10−4 lower than that of the silica background. The fiber was also tested in a laser configuration, demonstrating an optical-to-optical efficiency of ~77% at 1026 nm with respect to the pump at 975 nm.

© 2013 Optical Society of America

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References

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2013

2012

2010

K. Saitoh, T. Murao, L. Rosa, and M. Koshiba, “Effective area limit of large-mode-area solid-core photonic bandgap fibers for fiber laser applications,” Opt. Fiber Technol.16(6), 409–418 (2010).
[CrossRef]

2009

2006

J. Limpert, O. Schmidt, J. Rothhardt, F. Röser, T. Schreiber, A. Tünnermann, S. Ermeneux, P. Yvernault, and F. Salin, “Extended single-mode photonic crystal fiber lasers,” Opt. Express14(7), 2715–2720 (2006).
[CrossRef] [PubMed]

C. D. Brooks and F. Teodoro, “Multi-MW peak-power, single-transverse-mode operation of a 100μm core diameter, Yb-doped rodlike photonic crystal fiber amplifier,” Appl. Phys.89, 111119 (2006).

P. Laperle, C. Paré, H. Zheng, A. Croteau, and Y. Taillon, “Yb-doped LMA triple-clad fiber laser,” Proc. SPIE6343, 63430X (2006).
[CrossRef]

2001

2000

Bigot, L.

Bouwmans, G.

Brooks, C. D.

C. D. Brooks and F. Teodoro, “Multi-MW peak-power, single-transverse-mode operation of a 100μm core diameter, Yb-doped rodlike photonic crystal fiber amplifier,” Appl. Phys.89, 111119 (2006).

Calvet, P.

Coulombier, Q.

Croteau, A.

P. Laperle, C. Paré, H. Zheng, A. Croteau, and Y. Taillon, “Yb-doped LMA triple-clad fiber laser,” Proc. SPIE6343, 63430X (2006).
[CrossRef]

Delplace, K.

Dong, L.

Douay, M.

Ermeneux, S.

Fermann, M. E.

Foy, P.

Fu, L.

Fujimaki, M.

Geng, R.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

Goldberg, L.

Gu, G. C.

Hawkins, T. W.

Hugonnot, E.

Jian, S.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

Kashiwagi, M.

Kliner, D. A.

Kong, F.

Koplow, J. P.

Koshiba, M.

K. Saitoh, T. Murao, L. Rosa, and M. Koshiba, “Effective area limit of large-mode-area solid-core photonic bandgap fibers for fiber laser applications,” Opt. Fiber Technol.16(6), 409–418 (2010).
[CrossRef]

Laperle, P.

P. Laperle, C. Paré, H. Zheng, A. Croteau, and Y. Taillon, “Yb-doped LMA triple-clad fiber laser,” Proc. SPIE6343, 63430X (2006).
[CrossRef]

Li, J.

Limpert, J.

Liu, C.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

Lu, Y. C.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

Marcinkevicius, A.

Matsuo, S.

Mckay, H. A.

Murao, T.

K. Saitoh, T. Murao, L. Rosa, and M. Koshiba, “Effective area limit of large-mode-area solid-core photonic bandgap fibers for fiber laser applications,” Opt. Fiber Technol.16(6), 409–418 (2010).
[CrossRef]

Mussot, A.

Ning, T.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

Ohta, M.

Paré, C.

P. Laperle, C. Paré, H. Zheng, A. Croteau, and Y. Taillon, “Yb-doped LMA triple-clad fiber laser,” Proc. SPIE6343, 63430X (2006).
[CrossRef]

Quiquempois, Y.

Rosa, L.

K. Saitoh, T. Murao, L. Rosa, and M. Koshiba, “Effective area limit of large-mode-area solid-core photonic bandgap fibers for fiber laser applications,” Opt. Fiber Technol.16(6), 409–418 (2010).
[CrossRef]

Röser, F.

Rothhardt, J.

Saitoh, K.

Salin, F.

Samson, B.

Schmidt, O.

Schreiber, T.

Suzuki, S.

Taillon, Y.

P. Laperle, C. Paré, H. Zheng, A. Croteau, and Y. Taillon, “Yb-doped LMA triple-clad fiber laser,” Proc. SPIE6343, 63430X (2006).
[CrossRef]

Takenaga, K.

Tanigawa, S.

Teodoro, F.

C. D. Brooks and F. Teodoro, “Multi-MW peak-power, single-transverse-mode operation of a 100μm core diameter, Yb-doped rodlike photonic crystal fiber amplifier,” Appl. Phys.89, 111119 (2006).

Thomas, B. K.

Tovar, A. A.

Tünnermann, A.

Valentin, C.

Wang, C. C.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

Wei, K.

Yvernault, P.

Zhang, F.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

Zheng, H.

P. Laperle, C. Paré, H. Zheng, A. Croteau, and Y. Taillon, “Yb-doped LMA triple-clad fiber laser,” Proc. SPIE6343, 63430X (2006).
[CrossRef]

Appl. Phys.

C. D. Brooks and F. Teodoro, “Multi-MW peak-power, single-transverse-mode operation of a 100μm core diameter, Yb-doped rodlike photonic crystal fiber amplifier,” Appl. Phys.89, 111119 (2006).

J. Lightwave Technol.

J. Opt. A, Pure Appl. Opt.

C. C. Wang, F. Zhang, Y. C. Lu, C. Liu, R. Geng, T. Ning, and S. Jian, “Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A, Pure Appl. Opt.11(6), 065402 (2009).
[CrossRef]

J. Opt. Soc. Am. A

Opt. Express

Opt. Fiber Technol.

K. Saitoh, T. Murao, L. Rosa, and M. Koshiba, “Effective area limit of large-mode-area solid-core photonic bandgap fibers for fiber laser applications,” Opt. Fiber Technol.16(6), 409–418 (2010).
[CrossRef]

Opt. Lett.

Proc. SPIE

P. Laperle, C. Paré, H. Zheng, A. Croteau, and Y. Taillon, “Yb-doped LMA triple-clad fiber laser,” Proc. SPIE6343, 63430X (2006).
[CrossRef]

Other

D. Guertin, N. Jacobsen, K. Tankala, and A. Galvanauskas, “33μm core effectively single-mode chirally-coupled-core fiber laser at 1064nm,” in Proc. of OFC (2008), paper OWU2.

J.W. Dawson, R.J. Beach, I. Jovanovic, B. Wattellier, Z.M. Liao, S.A. Payne, and C.P. Barty, “Large flattened mode optical fiber for high output energy pulsed fiber lasers,” in Conf. on Lasers and Electro-Optics (Optical Society of America, 2003), paper CWD5.

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Figures (7)

Fig. 1
Fig. 1

Cross-section image of the 50 µm-core Yb-doped LCF fiber.

Fig. 2
Fig. 2

Mode pattern and intensity distribution (across the white line in the mode image) from (a) experiment, and (b) simulations for various ∆n with 0.25x10−4 increment.

Fig. 3
Fig. 3

Simulated effective mode area versus ∆n in straight fiber.

Fig. 4
Fig. 4

Simulated effective mode area versus various bending diameter for both Flat-top and Gaussian beam with the same core size.

Fig. 5
Fig. 5

Simulated mode losses in the core index depressed LCF.

Fig. 6
Fig. 6

Lasing slope efficiency measurements.

Fig. 7
Fig. 7

Propagation of flat-top mode in free space.

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