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LASER TRANSMITTER PARTICULARLY FOR GENERATING ULTRASONIC WAVES, AND USE THEREOF IN A CONTACTLESS NONDESTRUCTIVE TESTING DEVICE
LASER TRANSMITTER PARTICULARLY FOR GENERATING ULTRASONIC WAVES, AND USE THEREOF IN A CONTACTLESS NONDESTRUCTIVE TESTING DEVICE
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机译:专门用于产生超声波波的激光发射器,并将其用于非接触式非破坏性测试设备中
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摘要
A laser transmitter particularly intended for generating controlled-directivity ultrasonic waves, and comprising, inter alia, an optical cavity resonator (10) made up of two plane and parallel mirrors (11, 12) of which one (11) is completely reflective while the other (12) is partially reflective, as well as a laser generator (20) placed between said mirrors for transmitting radiation (R) perpendicularly thereto and exiting through mirror (12), wherein said generator (20) consists of plates (200) made of an active material and directed in such a way that the longitudinal axes thereof are perpendicular to said mirrors, said plates being attached to one another, and wherein a multiple-contact synchronising switch (30) is arranged between the generator (20) and the completely reflective mirror (11) to cause sequential plate emission (200). The laser transmitter may be used in nondestructive tests, in particular those using thermoelasticity or ablation.
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