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The power scalability of diffraction-limited Yb-doped fiber lasers is investigated with a new model which takes into consideration the spectrums of absorption and emission cross sections of active ions. It is found that the maximum output power of a fiber laser is not only dependent on the pump wavelength, but also depends on the core size and cladding-to-core area ratio of active fiber. To increase...
Phase-locked states of linear arrays of mutually-injected fiber lasers are theoretically investigated. It is found that the number of phase-locked states of N-laser linear array is the same as that of N-laser ring array.
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...
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