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US 2026/0309619 A1Published application
Nanosecond-scale photothermal dynamic imaging
AssigneeTrustees of Boston University
InventorsJi-Xin Cheng, Lu Lan, Jiaze Yin
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Abstract
Systems and methods are provided for performing photothermal dynamic imaging. An exemplary method includes: scanning a sample to produce a plurality of raw photothermal dynamic signals; receiving the raw photothermal dynamic signals of the sample; generating a plurality of second signals by matched filtering the raw photothermal dynamic signals to reject non-modulated noise; and performing an inverse operation on the second signals to retrieve at least one thermodynamic signal in a temporal domain.
Claims1
A method for performing photothermal dynamic imaging, the method comprising:
- illuminating a sample with a beam of pulsed infrared radiation to induce a transient temperature change in the sample due to absorption of infrared radiation;
- illuminating at least a portion of the infrared illuminated region of the sample with a beam of probe radiation;
- detecting with a photodiode at least a portion of probe beam radiation scattered from the infrared illuminated region of the sample;
- digitizing an intensity of probe beam radiation detected by the photodiode to produce a raw photothermal dynamic signal;
- processing a plurality of raw photothermal dynamic signal to produce a signal indicative of infrared absorption by the sample.
2 more elements
Dependencies are inferred from the claim text.