Patent ID: 8804106

Claim:
A system for analyzing at least one doped semiconductor layer, comprising: a pump source configured to inject charge carriers into a region of a sample to enhance index contrast between at least one doped layer of the sample and a substrate of the sample; one or more probe sources configured to illuminate a surface of the sample proximate to the injected region of the sample with incrementally separated beams of illumination having a first wavelength and incrementally separated beams of illumination having at least one additional wavelength; at least one actuation arm configured to actuate the one or more probe sources based on a disposition of incrementally separated illumination beams provided by the pump source to achieve the incremental beam separation between the incrementally separated illumination beams provided by the one or more probe sources or configured to actuate the pump source based on a disposition of the incrementally separated illumination beams provided by the one or more probe sources to achieve an incremental beam separation between one or more illumination beams provided by the pump source; one or more detectors configured to detect illumination having the first wavelength and illumination having the at least one additional wavelength reflected from the surface of the sample; and one or more computing systems communicatively coupled to the one or more detectors, the one or more computing systems configured to: acquire information associated with the reflected illumination having the first wavelength and information associated with the reflected illumination having the at least one additional wavelength from the one or more detectors, and determine at least one of an active carrier concentration and a thickness of the at least one doped layer of the sample based upon a comparison of the information associated with the reflected illumination having the first wavelength and the information associated with the reflected illumination having the at least one additional wavelength.