NIR diode laser based process control for industrial CVD reactors V. Hopfe, D.W. Sheel, D. Raisbeck, J. M. Rivero, W. Graehlert, O. Throl, A.M.B. van Mol and C.I.M.A. Spee J. Phys. IV France, 11 PR3 (2001) Pr3-1153-Pr3-1159 DOI: 10.1051/jp4:20013145