Researchers at the University of South Florida have invented a novel technique to detect traces of chemicals in fluids with a high degree of accuracy using an ultra-sensitive Raman sensor.
Currently, the use of double resonance to detect chemicals in fluids has not been achieved because of the fixed spacing of the cavity. This spacing leads to resonance accompanied with high walk-off loss. Other methods of detecting trace chemicals in fluids can be costly and the equipment needed is bulky. There is a need for an improved system to detect trace chemicals with high accuracy, low cost, and a compact size.
USF inventors have developed methods to achieve double resonance and detect chemical traces in fluids. The methods implement resonant micro-cavity enhanced Coherent anti -Stokes Raman scattering (CARS) to detect the chemical traces. Our inventors have also extended the detection techniques from single–gas sensor to dual-gas sensor based on an enhanced spontaneous dual emission as a result of cavity quantum electrodynamic effects.
This ultra-high sensitive chemical sensor can be used in chemical, pharmaceutical, food, and beverage industries for quality control purposes. Its compactness and durability makes it suitable for space missions where chemical sensors are in a great need for biomedical experimentation, the monitoring of water, and air recycling processes.
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