High-power frequency comb source tunable from 2.7 to 4.2  μm based on difference frequency generation pumped by an Yb-doped fiber laser.


We demonstrate a broadband mid-infrared (MIR) frequency comb source based on difference frequency generation (DFG) in periodically poled lithium niobate crystal. MIR radiation is obtained via mixing of the output of a 125 MHz repetition rate Yb-doped fiber laser with Raman-shifted solitons generated from the same source in a highly nonlinear fiber. The… (More)
DOI: 10.1364/OL.42.001748


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