method and device for photothermischen structure study of solid body

摘要

PCT No. PCT/DE81/00130 Sec. 371 Date Apr. 12, 1982 Sec. 102(e) Date Apr. 12, 1982 PCT Filed Aug. 26, 1981 PCT Pub. No. WO82/00891 PCT Pub. Date Mar. 18, 1982.A method for the structural, superficial and deep analysis of a body is disclosed. The method includes scanning the body to be examined using a modulated excitation radiation beam so as to impart a thermal modulation to the body. The thermal modulation is then measured on the side of the body distal to the side exposed to the beam. The amplitude as well as the phase of the measured thermal modulation is used to determine the thickness and structure of the body. A device for accomplishing the above described method is also disclosed.