2020
DOI: 10.1109/jlt.2020.2966025
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Selective Excitation and Amplification of Peak-Power-Scalable Out-of-Phase Supermode in Yb-Doped Multicore Fiber

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Cited by 24 publications
(29 citation statements)
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“…In order to form the intensity modulation, we discarded some parts of the input beam by creating a strong phase gradient and filtering out these parts with the diaphragm D installed in the Fourier plane of the telescope. In our scheme, the required beam profile was synthesized in the near field with respect to the SLM, contrary to the often-used approach in which the required profile was formed in the far field [17,38]. The near-field approach allows a more precise control of the amplitude and phase in the forming beamlets when the number of beamlets is large.…”
Section: Experimental Study Of Supermodes Propagation In Mcfmentioning
confidence: 99%
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“…In order to form the intensity modulation, we discarded some parts of the input beam by creating a strong phase gradient and filtering out these parts with the diaphragm D installed in the Fourier plane of the telescope. In our scheme, the required beam profile was synthesized in the near field with respect to the SLM, contrary to the often-used approach in which the required profile was formed in the far field [17,38]. The near-field approach allows a more precise control of the amplitude and phase in the forming beamlets when the number of beamlets is large.…”
Section: Experimental Study Of Supermodes Propagation In Mcfmentioning
confidence: 99%
“…The intensity distribution at the output face of the MCF when the out-of-phase supermode was launched is shown in Figure 3c. To obtain intensity and phase profiles of individual supermodes, as well as to estimate the content of each excited supermode, we used an interference setup similar to the one we used in [38]. A reference beam with a flat spatial phase was split off the main beam before the SLM via beamsplitter BS1, then transmitted through lenses L7 and L8 and the adjustable delay line to the camera, recombining with the studied beam at the beamsplitter BS2 at a small angle.…”
Section: Experimental Study Of Supermodes Propagation In Mcfmentioning
confidence: 99%
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“…As a rule, in the study of multicore fibers, primary attention is paid to the in-phase supermode [37,39,40]. However, in the recent analytical, numerical, and experimental works, it has been shown that an out-of-phase supermode (in which the phases of the fields in neighboring cores differ by π) can also be of great interest due to its stability in different nonlinear regimes [41][42][43][44]. Multicore fibers allow operation with pulse energies and powers higher than those of one-core fibers [41,42,44] (however, for ultrashort pulses, spatial walk-off of supermodes should be taken into account [45,46]).…”
Section: Introductionmentioning
confidence: 99%
“…More complicated fiber coupling devices, such as fan-in/fan-out fiber couplers, allowing access to one or more cores, can also be used [50]. An out-of-phase supermode can be excited with free-space objective lenses [48] or spatial light modulators [43].…”
Section: Introductionmentioning
confidence: 99%