Frequency combs in the molecular finger-print region have enabled applications in metrology, spectroscopy and medicine. All these applications benefit from higher average powers that allow for faster acquisition rates and an improved signal-to-noise ratio.  This extension complements the compact 50fs-thulium-doped ultrafast fiber laser system and provides a high-power frequency comb in the mid-IR.

The ultrafast mid-IR pulses are achieved through intra-pulse difference-frequency generation, which guarantees passive carrier-envelope-offset stability. The complete frequency-comb nature of the source can be achieved by controlling and stabilizing the fundamental pulse-repetition frequency of the driving laser.



Central wavelength   5 - 18 µm (tunable)
Pulse repetition rate   20MHz (others on request)
Average power   up to 100 mW
Polarization   linear
Beam quality   close to diffraction-limited (M2<1.3)
Average power stability   < 1% RMS
Pulse energy stability   < 1% RMS
Beam pointing   < 10 µrad
Addional features   Turnkey reliability, temperature-stabilized and dust-sealed housing


Measured Mid-IR spectrum in publication of collaborators


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