This product is a distributed feedback (DFB) semiconductor laser specifically designed for high-precision carbon dioxide (CO₂) gas detection. Its center wavelength is precisely locked at 2004nm, perfectly corresponding to the characteristic absorption peak of the CO₂ molecule. It features a compact TO39 package and integrated TEC, making it an ideal light source for building high-sensitivity, low-cost gas sensing systems.

Precise wavelength locking: With a center wavelength of 2004nm, it is optimized for CO₂ detection, ensuring high selectivity and effectively avoiding cross-interference from background gases.

Narrow linewidth output: The DFB structure enables narrow linewidth laser output, effectively improving spectral resolution and fully meeting the needs of high-precision detection technologies such as TDLAS.

Integrated temperature control: Built-in TEC thermoelectric cooler and high-precision thermistor enable precise control and bidirectional adjustment of the laser's operating temperature, ensuring wavelength lock and long-term reliability over a wide temperature range.

High power stability: It provides stable and powerful optical output to ensure signal strength and improve the detection limit.