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Better light collection by photodetectors would automatically improve signal to noise ratio and photodetector performance. For example, for the positron emission tomography application, it would result in a better image quality for a lower dose. The main cause of the light loss is too much reflection of light that is trying to travel from the light source into the semiconductor light sensor. Several options are possible to overcome this difficulty and will be investigated, such as anti-reflective coatings, the use of an optical coupling compound with a higher refractive index to bound the medium and the photodetector, or micro and nano structures on both the medium and the photodetector. The research will be aimed at finding the best compromise between light collection optimization and feasibility, to improve performance of photodetectors designed and manufactured by Excelitas Canada.
Roger Lecomte
Mélanie Bergeron
Excelitas Technologies
Biology
Medical devices
Université de Sherbrooke
Elevate
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