Hydrogen has extensive applications in many sectors. However, its safe and widespread use necessitates reliable sensing methods, according to researchers at Chiba University, Japan. While tunable diode laser absorption spectroscopy (TDLAS) is an effective gas sensing method, researchers said detecting hydrogen using TDLAS is difficult due to its weak light absorption property in the infrared region. Addressing this issue, Chiba University researchers developed a calibration-free technique which they said in a study enhances the accuracy and detection limits for sensing hydrogen using TDLAS.