High-Resolution and Gapless Dual Comb Spectroscopy with Current-Tuned Quantum Cascade Lasers for Environmental Applications

Dual-comb spectrometers based on QCLs offer a unique tool for environmental sensing. We present high-resolution absorption and dispersion spectra covering 55 cm-' of methane and time-resolved spectroscopy of combustion diagnostics, stopped-flow reaction monitoring and photochemistiy.