Characterization of materials with optically shaped acoustic waveforms
First Claim
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1. A method comprising:
- directing a sequence of at least three optical pulses to a sample to generate an acoustic response in the sample at a frequency corresponding to the pulse sequence;
varying the timing of one or more of the pulses in the sequence relative to one or more other pulses in the sequence to vary the frequency of the acoustic response in the sample; and
measuring the strength of the acoustic response as a function of the varied frequency to determine information about the sample.
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Abstract
A method for characterizing one or more properties of a sample using acoustic waveforms is disclosed, and comprises directing a sequence of at least three optical pulses to the sample to generate an acoustic response in the sample at a frequency corresponding to the pulse sequence, varying the timing of one or more of the pulses in the sequence to vary the frequency of the acoustic response in the sample, and measuring the strength of the acoustic response as a function of the varied frequency to determine information about the sample.
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Citations
28 Claims
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1. A method comprising:
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directing a sequence of at least three optical pulses to a sample to generate an acoustic response in the sample at a frequency corresponding to the pulse sequence;
varying the timing of one or more of the pulses in the sequence relative to one or more other pulses in the sequence to vary the frequency of the acoustic response in the sample; and
measuring the strength of the acoustic response as a function of the varied frequency to determine information about the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A system comprising:
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an optical excitation source configured to direct a sequence of at least three optical pulses to a sample to generate an acoustic response in the sample at a frequency corresponding to the pulse sequence, the optical excitation source further configured to vary the timing of one or more of the pulses in the sequence to vary the frequency of the acoustic response in the sample;
an optical detection system configured to measure the strength of the acoustic response as a function of the varied frequency; and
an electronic processor coupled to the optical detection system and configured to determine information about the sample based on the measured strength of the acoustic response as a function of the varied frequency.
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Specification