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Multichannel, time-resolved picosecond laser ultrasound imaging and spectroscopy with custom complementary metal-oxide-semiconductor detector
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10.1063/1.3298606
/content/aip/journal/rsi/81/2/10.1063/1.3298606
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/2/10.1063/1.3298606
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Simplified pixel level schematic showing four independently switchable storage capacitors.

Image of FIG. 2.
FIG. 2.

Schematic of the experimental arrangement.

Image of FIG. 3.
FIG. 3.

Top: A single pixel from the array detector compared with a result from a single point detector for a thinly coated sample. Bottom: The acquired data from the array detector showing the multiple echo returns from the interface between the coating and the substrate.

Image of FIG. 4.
FIG. 4.

Top: Thickness profile obtained from echo times and known acoustic velocity. Bottom: Echo returns from the interface between the coating and substrate between two regions of differing thickness.

Image of FIG. 5.
FIG. 5.

Coating thickness map over an extended region of the sample. Inset shows a zoom of a flat region where the standard deviation of the thickness is .

Image of FIG. 6.
FIG. 6.

The portion and intensity of the optical wavelengths from the output of the SCG probe beam used in the experiment.

Image of FIG. 7.
FIG. 7.

Top: The measured Brillouin oscillations for different probe wavelengths. Bottom: The corresponding Brillouin frequencies.

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/content/aip/journal/rsi/81/2/10.1063/1.3298606
2010-02-04
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Multichannel, time-resolved picosecond laser ultrasound imaging and spectroscopy with custom complementary metal-oxide-semiconductor detector
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/2/10.1063/1.3298606
10.1063/1.3298606
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