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arXiv · 1203.2441

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

Axel Ruehl·Alessio Gambetta·Ingmar Hartl·Martin E. Fermann·Kjeld S. E. Eikema·Marco Marangoni
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Abstract

We report on a mid-infrared 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 4.7 μm wavelength.

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Axel Ruehl, Alessio Gambetta, Ingmar Hartl, Martin E. Fermann, Kjeld S. E. Eikema, Marco Marangoni. 2012-03-12. Widely-tunable mid-IR frequency comb source based on difference frequency generation. https://arxiv.org/abs/1203.2441

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