Widely-tunable mid-infrared frequency comb source based on difference frequency generation

A. Ruehl, A. Gambetta, I. Hartl, M.E. Fermann, K.S.E. Eikema, M. Marangoni

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Abstract

We report on a mid-IR frequency comb source of unprecedented tunability covering the entire 3-10 μm molecular fingerprint region. The system is based on difference frequency generation in a GaSe crystal pumped by a 151 MHz Yb:fiber frequency comb. The process was seeded with Raman-shifted solitons generated in a highly nonlinear suspended-core fiber with the same source. Average powers up to 1.5 mW were achieved at the 4.7 μm wavelength. © 2012 Optical Society of America.
Original languageEnglish
Pages (from-to)2232-2234
JournalOptics Letters
Volume37
Issue number12
DOIs
Publication statusPublished - 2012

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