SYSTEM FOR MEASURING THE ABSORPTION OF A LASER EMISSION BY A SAMPLE
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United States of America Patent
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Nov 4, 2021
app pub date -
Sep 4, 2019
filing date -
Sep 6, 2018
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Abstract
A system for measuring the absorption of a laser radiation by a sample is provided. The system comprises: •(i) a pulsed laser source, suitable for emitting pulses at a repetition frequency f1 and arranged so as to illuminate the sample; •(ii) an AFM probe arranged so as to be able to be placed in contact with the region of the surface of the sample on one side, the AFM probe having a mechanical resonance mode at a frequency fm; and •(iii) a detector configured to measure the amplitude of the oscillations of the AFM probe resulting from the absorption of the laser radiation by the region of the surface of the sample, characterized in that it also comprises a translation system designed to displace the sample at a frequency fp.
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