Patent ID: 9182351
Filing Date: 2015-11-10
Classification: G01B,G01N,H04N

Abstract:
1. An apparatus comprising: a light source that produces an illumination beam; an optical system that receives the illumination beam and produces an illumination spot on a surface of the sample, wherein all wavelengths in the illumination beam are simultaneously combined in the illumination spot; a scanning system that scans the illumination spot to form an illumination line across the sample, wherein the scanning system scans the illumination beam in a plane that is at a non-normal angle of incidence on the sample, and wherein the sample emits photoluminescence light in response to excitation caused by the illumination spot along the illumination line; a stage for providing relative movement between the illumination line and the sample; a detector that images the photoluminescence light emitted along the illumination line on a two-dimensional array with a first dimension representing spatial information along the illumination line and a second dimension represent spectral information of the photoluminescence light, wherein the detector produces an image frame representing the photoluminescence light emitted along the illumination line, and wherein the detector produces a plurality of image frames for the illumination line on the surface of the sample as the stage produces relative movement between the illumination line and the sample; and a processor coupled to the detector to receive the plurality of image frames and generates a photoluminescence image of the surface of the sample.