Jx. Zhu et al., A THEORETICAL TREATMENT FOR PHOTOTHERMAL DEFLECTION ON STUDYING MULTILAYER INHOMOGENEOUS MATERIAL, Progress in Natural Science, 6, 1996, pp. 227-230
A nondestructive method based on PDS techniques is presented for deter
mining the distribution of nitrogen concentrations in gallium phosphid
e. The theorectical treatment; for calculating the spatial variation o
f the optical absorption in multilayer inhomogeneous material is descr
ibed.