Analysis on Power Scalability of Multicore Fiber Laser

Multicore fiber laser is a promising approach to get high-power laser beams while maintaining good beam quality. The in-phase complex amplitude distribution for regular multicore fiber lasers with different core numbers is calculated using FDTD method. It is shown that the in-phase turn out a bell-shape profile owing to different coupling intensity in different cores, the output power of the outside ring cores with decrease as the distance to the central core get larger. The total in-phase mode output power for regular multicore fiber lasers as a function of core numbers is obtained. The total output power of 61-core fiber laser is only 12 times of the central core in order to keep an in-phase mode, which brings a restriction to the power scalability of multicore fiber laser. The multicore fiber should be mode shaped to keep the in-phase mode a flat-shape profile. The in-phase mode can still be selected by using a Talbot cavity by numerical calculating, which show that the mode-shaped multicore fiber laser output power is of great promise to scale to a high-power level.

[1]  N. Peyghambarian,et al.  Birefringent in-phase supermode operation of a multicore microstructured fiber laser. , 2007, Optics express.

[2]  N. Peyghambarian,et al.  Phase-locked multicore all-fiber lasers: modeling and experimental investigation , 2007 .

[3]  Miroslav Kolesik,et al.  Mode shaping in multicore fibers. , 2007, Optics letters.

[4]  N. Peyghambarian,et al.  Phase locking and in-phase supermode selection in monolithic multicore fiber lasers. , 2006, Optics letters.

[5]  Charlotte R. Bennett,et al.  Multi-core photonic crystal fibers for high-power laser , 2006, SPIE LASE.

[6]  Yanming Huo,et al.  Analysis of transverse mode competition and selection in multicore fiber lasers , 2005 .

[7]  C. R. Bennett,et al.  Phase locking and supermode selection in multicore photonic crystal fiber lasers with a large doped area. , 2005, Optics letters.

[8]  D. Gapontsev,et al.  2 kW CW ytterbium fiber laser with record diffraction-limited brightness , 2005, CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005..

[9]  A. Mafi,et al.  Shaping modes in multicore photonic crystal fibers , 2005, IEEE Photonics Technology Letters.

[10]  Yanming Huo,et al.  Fundamental mode operation of a 19-core phase-locked Yb-doped fiber amplifier. , 2004, Optics express.

[11]  Y. Jeong,et al.  Ytterbium-doped large-core fiber laser with 1.36 kW continuous-wave output power. , 2004, Optics express.

[12]  Arash Mafi,et al.  Phase locking in a passive multicore photonic crystal fiber , 2004 .

[13]  P. Cheo,et al.  Thermomechanical properties of high-power and high-energy Yb-doped silica fiber lasers , 2004, IEEE Photonics Technology Letters.

[14]  P. Cheo,et al.  Self-organization in a multicore fiber laser array. , 2003, Optics letters.

[15]  A. Liu,et al.  A high-brightness laser beam from a phase-locked multicore Yb-doped fiber laser array , 2001, IEEE Photonics Technology Letters.

[16]  D. V. Vysotsky,et al.  Phase locking in a multicore fiber laser by means of a Talbot resonator. , 2000, Optics letters.

[17]  T. Shepherd,et al.  Multi-core photonic crystal fibres for high power lasers and amplifiers , 2006 .