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

Claim 12:
13. A system for microscopic analysis of a sample, comprising:
a) a mid-IR optical source (MIR 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 at least one of: probe light transmitted through the sample and probe light returning from the sample;
f) a focus stage to generate relative motion between the sample and the focused combined beams to enable measurements of IR absorption at a plurality of depths within the sample; and
g) a data acquisition and processing system for acquiring and processing a signal indicative of IR absorption by the sample at the plurality of depths, wherein IR absorption signals are acquired at a plurality of locations of the focus stage to generate depth resolved maps of IR absorption of the sample.