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EP1192445A1 OPTICAL FIBRE PROBE FOR PHOTOACOUSTIC MATERIAL ANALYSIS 有权
光纤的进行照片声学材料分析探头

OPTICAL FIBRE PROBE FOR PHOTOACOUSTIC MATERIAL ANALYSIS
摘要:
A probe comprises an excitation source and a double-core optical fibre. A pulsed laser signal (20) of the excitation source is supplied to the outer core (42) at one end of the optical fibre. The other end is provided with an interferometer film (18). An excitation signal (22) produced in the sample (10) modulates the thickness of the film (18). This provides an interferometer signal (26, 28) detected from the inner core (40).
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