Patent ID: 11940380
Assignee: PURDUE RESEARCH FOUNDATION
Field: Measurement (Instruments)
Classification: CPC G  C  H | IPC C  G  H

Claim 0:
1. A device for microscopic analysis of a sample, comprising:
a) a mid-IR optical source that generates an infrared beam;
b) an optical source that generates a probe beam;
c) beam combining optics configured to combine the infrared beam and the probe beam as combined beams;
d) an objective configured to focus the combined beams on to the sample;
e) a detector to detect probe light from at least one of: the probe beam transmitted through the sample and the probe beam returning from the sample; and
f) a data acquisition and processing system configured to acquire and process the detected probe light from the detector to generate a signal indicative of IR absorption by the sample, wherein the signal indicative of IR absorption has a spatial resolution of less than 1 micrometer,
wherein the data acquisition and processing system is configured to obtain measurements at different depths within the sample and generate a plurality of signals indicative of IR absorption each at the different depths for use in generating a set of depth-resolved maps of IR absorption of the sample.