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Coupled waveguide arrays lend themselves very well to photonic engineering through tailoring of the propagation and coupling constants [1]. Especially interesting is the manipulation of collective Floquet Bloch waves (extended beams see Figure 1 top, a and d) that propagate over several waveguides through evanescent coupling and their manipulation for classical and quantum data processing. Phase-front...
In-phase locked array of lasers, where all have common frequencies and phases, can serve as single powerful laser with the high beam quality of an individual laser. Talbot and Fourier diffractions are commonly used for strong coupling between the lasers in the array. When used separately, each has some disadvantages. Talbot diffraction can lead to efficient out-of-phase locking, but requires additional...
Coherent combination of fiber amplifiers has become a viable concept for pulse-energy and average-power scaling. Today, systems with up to 8 parallel amplifiers exist that demonstrate a high combination efficiency at record performance values [1]. In order to substantially increase the number of amplifier channels even further to achieve the required performance, an additional integration step is...
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