| 摘要 |
In a nondestructive and noncontact analysis system for analyzing and evaluating an object (SW), a light beam generation/modulation apparatus (12) emits a modulated and focused light beam (MLB) to thereby irradiate the object (SW), and the modulation of the modulated and focused light beam is carried out with a modulation signal (MO-S) synchronized with a reference signal (RE-S) composed of a series of regular pulses. A magnetism detection apparatus (22) detects a magnetic field (MF), which is generated by an electric current induced by irradiating the object with the modulated and focused light beam, to thereby produce a magnetic field signal (MF-S). A signal extraction circuit (24) extracts a phase difference signal (PDF-S) between the reference signal (RE-S) and the magnetic field signal (MF-S). An image data production system (Fig. 14) produces phase difference image data (PDFij) based on the phase difference signal (PDF-S). <IMAGE>
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