US 11,680,892 B2
Method and apparatus for enhanced photo-thermal imaging and spectroscopy
Craig Prater, Santa Barbara, CA (US); Kevin Kjoller, Santa Barbara, CA (US); and Roshan Shetty, Westlake Village, CA (US)
Assigned to Photothermal Spectroscopy Corp, Santa Barbara, CA (US)
Filed by Photothermal Spectroscopy Corp., Santa Barbara, CA (US)
Filed on May 10, 2021, as Appl. No. 17/316,453.
Application 17/316,453 is a continuation of application No. 16/465,824, granted, now 11,002,665, previously published as PCT/US2017/063807, filed on Nov. 29, 2017.
Claims priority of provisional application 62/569,944, filed on Oct. 9, 2017.
Claims priority of provisional application 62/567,037, filed on Oct. 2, 2017.
Claims priority of provisional application 62/541,749, filed on Aug. 6, 2017.
Claims priority of provisional application 62/540,008, filed on Aug. 1, 2017.
Claims priority of provisional application 62/505,533, filed on May 12, 2017.
Claims priority of provisional application 62/427,671, filed on Nov. 29, 2016.
Prior Publication US 2022/0065772 A1, Mar. 3, 2022
Int. Cl. G01J 3/427 (2006.01); G01N 21/17 (2006.01); G01J 3/28 (2006.01); G01J 3/44 (2006.01); G01N 21/64 (2006.01); G01N 21/65 (2006.01)
CPC G01N 21/171 (2013.01) [G01J 3/2823 (2013.01); G01J 3/427 (2013.01); G01J 3/4406 (2013.01); G01J 3/4412 (2013.01); G01N 21/6458 (2013.01); G01N 21/65 (2013.01); G01N 2021/1714 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for analyzing a sample, the method comprising:
a, illuminating a region of the sample with a light beam of infrared radiation;
b, illuminating at least a sub-region of the region of the sample with a probe light beam having a shorter wavelength than the light beam of infrared radiation;
c, analyzing probe light collected from the sample to obtain measurements indicative of infrared absorption of the sub-region of the sample; and
d, collecting fluorescent light from the sample in response to stimulation of the sample by the probe light beam.