Physics – Quantum Physics
Scientific paper
2012-02-27
Physics
Quantum Physics
8 pages, 2 figures revised version, added references
Scientific paper
We describe a coherent mid-infrared continuum source with 700 cm-1 usable bandwidth, readily tuned within 600 - 2500 cm-1 (4 - 17 \mum) and thus covering much of the infrared "fingerprint" molecular vibration region. It is based on nonlinear frequency conversion in GaSe using a compact commercial 100-fs-pulsed Er fiber laser system providing two amplified near-infrared beams, one of them broadened by a nonlinear optical fiber. The resulting collimated mid-infrared continuum beam of 1 mW quasi-cw power represents a coherent infrared frequency comb with zero carrier-envelope phase, containing about 500,000 modes that are exact multiples of the pulse repetition rate of 40 MHz. The beam's diffraction-limited performance enables long-distance spectroscopic probing as well as maximal focusability for classical and ultraresolving near-field microscopies. Applications are foreseen also in studies of transient chemical phenomena even at ultrafast pump-probe scale, and in high-resolution gas spectroscopy for e.g. breath analysis.
Amarie Sergiu
Keilmann Fritz
No associations
LandOfFree
Mid-infrared frequency comb spanning an octave based on an Er fiber laser and difference-frequency generation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mid-infrared frequency comb spanning an octave based on an Er fiber laser and difference-frequency generation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mid-infrared frequency comb spanning an octave based on an Er fiber laser and difference-frequency generation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-262596