optical gas sensing

Optical gas sensing detects gases by observing how they interact with light. When a specific light wavelength passes through a gas, molecules may absorb or scatter the light depending on their type and concentration. By measuring changes in the light—such as reductions in intensity or shifts in its properties—the sensor can identify and quantify gases present in an environment. This method is precise, fast, and often non-contact, making it useful for monitoring air quality, industrial processes, or detecting harmful gases safely and accurately.