high-power laser
The present numerical work combines gain switching and external optical feedback to generate pulses with a high level of coherence across a large array of semiconductor lasers. The influence of several parameters such as modulation frequency, feedback strength and frequency detuning is analyzed and this dataset gathers the temporal traces generated with our code, that is adapted from the Lang-Kobayashi model to take into account decayed coupling in an array of lasers.
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Fiber Bragg grating (FBG) is a key component in high-power fiber lasers. Mirror FBGs can act as cavity mirrors for fiber oscillators, and chirped and tilted fiber Bragg gratings (CTFBGs) can be used as all-fiber spectral filters to suppress nonlinear effects such as stimulated Raman scattering (SRS). Here a pair of mirror FBGs at 1080 nm are inscribed in fibers with a core diameter of 30 μm by femtosecond (fs) -lasers, and a high-power all-fiber oscillator is constructed based on the fs-written mirror FBGs.
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