Abstract

By means of a difference-frequency-generation (DFG) process driven by a two-branch Er-doped fiber laser at a stabilized $100\mathrm{MHz}$ repetition rate, broadly tunable pulses from $5\text{to}12\mu \mathrm{m}$ are generated with an unprecedented power level of around $100\mu \text{W}$. The mid-IR pulse train is expected to exhibit an harmonic comb structure as a result of the cancellation of the carrier-envelope offset frequency resulting from the DFG process.

© 2008 Optical Society of America

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