Patent ID: 9075012
Filing Date: 2015-07-07
Classification: G01N,G01R,H02S,Y02E

Abstract:
1. A system for in-situ photoluminescence, comprising: a low-power, pulsed diode laser; a single optical fiber for both transmitting light from the laser to a sample and also for simultaneously collecting and transmitting a photoluminescence (PL) response signal from the sample, wherein the collecting from the sample is for about 10 nanoseconds after the transmitting of the light from the laser; a filter for receiving the collected PL signal from the optical fiber and removing scattered light; a broad band detector for detecting a time-resolved photoluminescence of the filtered PL signal for band widths ranging from about 800 nm to about 1300 nm and, in response, forming a signal representative of the time-resolved photoluminescence; a digitizing component for receiving the time-resolved photoluminescence signal and measuring up to 1 million measurements or more per second of the time-resolved photoluminescence signal; and a signal processor processing an output of the digitizing component to determine a lifetime correlation of the sample.