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We have been investigating THz photon emission/absorption dynamics of high energy electrons channeled through crystalline nanostructures. Preliminary plasma wakefield simulations, employing particle-in-cell (PIC) computations, indicated that a short-pulse (σ ∼ 1 ps) electron beam, modulated with 28.4 THz, generates an intense plasmonic wave of ∼ 0.3 TeV/m in a plasma channel with a crystalline electronic...
In this paper, high-power fiber lasers and amplifiers based on multimode interference (MMI) in active large-core multimode optical fibers are proposed and their properties are investigated. Experimental results and simulations indicate that such fiber lasers and amplifiers are promising candidates for high-power miniature solid-state lasers. Utilization of the MMI leads to remarkable spectral and...
Distributed feedback (DFB) phosphate glass fiber lasers that are cladding pumped with multimode diodes have been demonstrated. Single and cascaded DFB lasers with outputs up to 160 mW and 1 W, respectively, have been achieved.
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