Optical Diagnostics of Mercuric Iodide Crystal Growth

Two optical methods were recently developed for in situ monitoring erf the growth process erf mercuric iodide crystals. The first method uses resonance fluorescence spectroscopy (RFS) for the determination of iodine vapor present in the growth ampule, which is an important parameter in determining the stoichiometry, and therefore the quality of the crystals. The second method, Reflectance Spectroscopy Thermometry (RST) measures the crystal face temperature with a present accuracy of ±1 °C.