Generation of ultrasound by repetitively Q-switching a pulsed Nd:YAG laser

Repetitively Q-switching a Nd:YAG laser during a single flashlamp pulse has been used successfully to generate a train of acoustic pulses with a repetition rate as high as 53 kHz. The spectral content of this multiple-pulse ultrasonic signal is significantly narrower in bandwidth than that of a sing...

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Veröffentlicht in:	Appl. Opt.; (United States) 1988-11, Vol.27 (22), p.4696-4700
Hauptverfasser:	WAGNER, J. W, DEATON, J. B. JR, SPICER, J. B
Format:	Artikel
Sprache:	eng
Schlagworte:	ACOUSTICS ELECTROMAGNETIC RADIATION ENGINEERING Exact sciences and technology Fundamental areas of phenomenology (including applications) LASER RADIATION LASERS NEODYMIUM LASERS Physics PULSES Q-SWITCHING RADIATIONS SOLID STATE LASERS SOUND WAVES 420300 > Engineering-- Lasers-- (-1989) ULTRASONIC WAVES Ultrasonics, quantum acoustics, and physical effects of sound
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Beschreibung
Zusammenfassung:	Repetitively Q-switching a Nd:YAG laser during a single flashlamp pulse has been used successfully to generate a train of acoustic pulses with a repetition rate as high as 53 kHz. The spectral content of this multiple-pulse ultrasonic signal is significantly narrower in bandwidth than that of a single pulse. A corresponding reduction in the detection system bandwidth results in a marked improvement in detection sensitivity.
ISSN:	0003-6935 1559-128X 1539-4522
DOI:	10.1364/ao.27.004696