The new technique is said to have the ability to detect changes with an accuracy of up to 0.000001 on the refractive index. Credit: Peakstock / Shutterstock.

Researchers have developed a new technique utilising light for non-invasive medical diagnostics and optical communication.

This research team, led by Aston University professor Igor Meglinski, indicated that orbital angular momentum (OAM) light has the sensitivity and precision to render certain surgical procedures or biopsies obsolete.

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The technology may also enable more precise monitoring of disease progression and treatment planning.

Also known as vortex beams, OAM light is structured with a tailored spatial configuration. Its application spans various fields, including astronomy and optical communications.

The research, conducted in collaboration with the University of Oulu, demonstrated that OAM maintains its phase properties even through highly scattering media such as biological tissues unlike conventional light signals.

These findings showed the light’s ability to detect changes with an accuracy of up to 0.000001 on the refractive index, which is said to surpass those of currently available diagnostic technologies.

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Aston Institute of Photonic Technologies professor Igor Meglinski said: “By showing that OAM light can travel through turbid or cloudy and scattering media, the study opens up new possibilities for advanced biomedical applications.

“For example, this technology could lead to more accurate and non-invasive ways to monitor blood glucose levels, providing an easier and less painful method for people with diabetes.

“My team’s methodological framework and experimental validations provide a comprehensive understanding of how OAM light interacts with complex scattering environments, reinforcing its potential as a versatile technology for future optical sensing and imaging challenges.”

By adjusting OAM light’s initial phase, the researchers anticipate new developments in areas such as secure optical communication systems and advanced biomedical imaging.