Conventional methods for gas detection in high-temperature combustion environments often lack the temporal resolution necessary to capture transient chemical processes. Our dual-comb spectrometer addresses this by offering fast acquisition rates and high spectral resolution.

The dual-comb spectrometer is based on erbium fiber oscillators at a 250 MHz repetition rate, generating MIR radiation through difference frequency generation (DFG). The spectrometer operates over an optical bandwidth of up to 9 THz, enabling real-time spectral acquisition with a signal-to-noise ratio (SNR) of 168 Hz^0.5 at an acquisition rate of 26 kHz. This setup allows multi-species gas detection without aliasing effects, making it ideal for capturing transient phenomena in chemically reacting systems.

• High Temporal Resolution: Captures transient chemical reactions with sub-millisecond acquisition times.
• Multi-Species Detection: Enables simultaneous monitoring of multiple gases, aiding in the development of predictive kinetic models for energy systems.
• Environmental Monitoring: Provides efficient detection for atmospheric gas emissions in open-path environments, taking advantage of the water-transparent spectral window.