Abstract
A quantitative dynamic stress measuring method in oscillating quartz crystals by means of optical beam modulation is reported. The principle of the measurement is as follows: The oscillating quartz crystal is placed between crossed polarizers. The modulated light intensity is expressed by ΔI/I = Δδ-sinδ/2 sin2(δ/2), where I is the de component and ΔI is the accomponent of the modulated light intensity, respectively.
© 1976 Optical Society of America
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