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Simple method for mid-infrared optical frequency comb generation with dynamic offset frequency tuning
We present a simple method for fully stabilized mid-infrared optical frequency comb generation based on single-pass femtosecond optical parametric generation that is seeded by a continuous-wave laser. We have implemented the method in a periodically poled lithium niobate crystal that produces a frequency comb tunable across 3325 nm–4000 nm (2380 …