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Broadband mid-infrared coherent light source from fiber-laser-pumped difference frequency generators based on cascaded crystals

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We experimentally obtained mid-infrared sources having instantaneous-bandwidth covering 2.8-3.9 μm from DFGs based on two cascaded PPLN crystals. Numerical simulations show that by cascading more crystals, light sources covering 2.5-5 μm could be obtained.

© 2020 The Author(s)

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