LASER INTERFEROMETRIC STUDIES OF LASER-INDUCED SURFACE HEATING AND DEFORMATION.

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作者
Univ of Maryland, College Park, MD,, USA, Univ of Maryland, College Park, MD, USA [1 ]
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关键词
INTERFEROMETERS - Laser Applications - METALS AND ALLOYS - SEMICONDUCTOR MATERIALS - STRESSES - Thermal - SURFACES - Radiation Effects;
D O I
10.1109/JQE.1986.1072994
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摘要
A Mach-Zehnder laser interferometer has been used to study the time-resolved deformation of metal and semiconductor surfaces caused by irradiation with the second harmonic of an Nd:YAG laser. The surfaces of thick and thin plates have been studied. The signals obtained for thick sample surfaces are compared to those derived from theory based on thermal expansion caused by heating of the surface by the laser pulse. For thin plates, mechanical vibrations due to induced thermal stress are observed and compared to theory.
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页码:569 / 573
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