Generation of narrow-band ultrasound with a long cavity mode-locked Nd : YAG laser

Generation of narrow-band ultrasound with a long cavity mode-locked Nd : YAG laser

A passively mode-locked, flashlamp-pumped Nd:YAG laser with a cavity length of 11.19 m has been developed to study the noncontact generation of narrow-band ultrasound. The individual mode-locked pulses acted as separate sources of ultrasound, producing a train of acoustic pulses with a repetition ra...

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Veröffentlicht in:Applied physics letters 1990-06, Vol.56 (24), p.2390-2392
Hauptverfasser: DEATON, J. B, MCKIE, A. D. W, SPICER, J. B, WAGNER, J. W
Format: Artikel
Sprache:eng
Schlagworte:
ALUMINIUM
ELEMENTS
ENGINEERING
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
LASER MIRRORS
LASERS
METALS
MIRRORS
MODE LOCKING
NEODYMIUM LASERS
Optics
PHOTOACOUSTIC EFFECT
Physics
SIGNAL-TO-NOISE RATIO
SOLID STATE LASERS
SOUND WAVES 426002 > Engineering-- Lasers & Masers-- (1990-)
ULTRASONIC WAVES
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Beschreibung
Zusammenfassung:A passively mode-locked, flashlamp-pumped Nd:YAG laser with a cavity length of 11.19 m has been developed to study the noncontact generation of narrow-band ultrasound. The individual mode-locked pulses acted as separate sources of ultrasound, producing a train of acoustic pulses with a repetition rate of about 13.4 MHz. The ultrasound was generated in an aluminum sample and remotely detected with a path stabilized Michelson interferometer. The energy in the multiple pulse acoustic signal was confined to a considerably reduced spectral range compared with that in a single pulse.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.102925