H. Blancher et al., INTERFEROMETRIC METHOD FOR THE OBSERVATION OF INFRARED PHOTOTHERMAL EFFECTS, International journal of infrared and millimeter waves, 16(11), 1995, pp. 1911-1926
The development of an interferometric method for the real time determi
nation of the photothermic effect induced in a material by infrared ra
diation of wavelength in the region of 10 mu m. Applied to the qualita
tive and quantitative determination of absorbant impurities contained
in a transparent material. Experimental determination of the average d
ensity of precipitated SiO2 contained in a sample of silicon.