Revolutionary Laser-Based Gas Sensor: Identifying Molecules with Unprecedented Precision
Physicists at CU Boulder and NIST have developed a laser-based device capable of identifying a vast array of molecules in any gas sample with unparalleled precision, down to parts per trillion. This breakthrough leverages frequency comb lasers and a novel technique called Modulated Ringdown Comb Interferometry (MRCI) to overcome limitations of previous methods. By bouncing laser light thousands of times within an optical cavity, the device significantly enhances detection sensitivity. Applications range from medical diagnostics (detecting diseases via breath analysis) to environmental monitoring (tracking greenhouse gases). The team is currently collaborating with medical researchers to explore its potential in diagnosing diseases like lung cancer and diabetes.