Non-destructive and non-invasive gas measurement instruments based on Tunable Diode Laser Absorption Spectroscopy (TDLAS), Digital Wavelength Modulation Spectroscopy (dWMS). High-performance single- mode lasers with modulation bandwidths of up to 10 Gbit/s and tuning ranges of up to 3 nm  are well-suited for  sensing applications. Gas molecules such as methane (CH4), water vapor (H2O),Oxygen (O2) , Carbon Dioxide (CO2), Ammonia (NH3) can be detected with our technologies.