ISI presents is latest patent application, developing a new system for making Time resolved Raman measurements exploiting the properties of SPADs. One of the biggest challenges in making Raman observation is contamination by fluorescent signals. Time resolved Raman is a well known technique to separate these signals, but currents systems are prohibitively expensive.
This patent explores a method of exploiting the properties of SPAD to perform timing measurements on < 100 ps times scales. Allowing the instrument in principle to be developed at a fraction of the cost of existing instruments. This exciting technique could be used for drug detection, measurement of bio pharmaceuticals and even cancer detection.