An international research group has developed a world-first fiber optic technology which may help detect a wide range of gases with unprecedented sensitivity. Published in the journal Optica, the discovery involves the creation of a fiber optic device which consists of an invisible infrared laser coupled to an ultra-broadband supercontinuum generator – two elements that researchers have never managed to combine into a single optical system before. Led by Macquarie University scientists in Australia, the group believes that potential applications for this technology range from breath analysis to air-quality monitoring.
According to lead researcher Dr. Darren Hudson of Macquaraie University, “This new supercontinuum technology is capable of being used to detect an array of gases, including methane, carbon dioxide and nitrous oxide – gases that can be harmful to humans in high levels and have implications in climate change.”
Over the past decade, researchers around the globe have worked to create high-brightness sources of infrared light – an invisible form of light that sits just beyond visible red light in the spectrum. While this work has revolutionized how we detect and measure a staggering range of molecules, the current technology still requires large laser systems, optical laboratory conditions and an expert operator. (more…)