Transient grating time resolved luminescence measurements

A method of measuring light emitted by a source, said method comprising:

• (a) imaging light from the source onto a photo-detector array at a selected instant in time by disposing a gate medium between the source and the photo-detector array and also illuminating the gate medium with at least one pulsed gate beam to form a transient grating in the gate medium at the selected instant in time;
• (b) exciting the source with a pulsed excitation beam, and synchronizing at least one pulsed gate beam to the pulsed excitation beam with an adjustable delay;
• (c) collecting measurements from the photo-detector array of the light imaged onto the photo-detector array;
• and
• (d) repeating the imaging of light from the source onto the photo-detector array and the collecting of measurements from the photo-detector array of the light imaged onto the photo-detector array for different adjusted delays and combining the measurements collected from the photo-detector array to construct a graph of the light imaged from the source as a function of time since the excitation of the source.