Generation and detection of ultrasound by optical means, which together are known as laser ultrasonics or laser based ultrasound.
👉 Generation and detection of ultrasound by optical means, which together are known as laser ultrasonics or laser based ultrasound, represent an area of intensive research and development which was until the twenty-first century limited to the laboratory and pilot demonstrations.
👉 The technology has matured and applications have been transitioned to industry. It is also commercially available.
👉 Laser ultrasonic techniques are also useful for material characterization and optical detection can be used to characterize piezoelectric transducers.
👉 With laser ultrasonic techniques, there is no requirement for precise transducer orientation, such as that found in conventional piezoelectric techniques.
👉 Laser ultrasonic testing, like any other ultrasonic technique, can be used for measuring thickness.
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