Recently I took an introductory course on Group Theory applied to chemistry, and learned about symmetry applied to molecular vibrations and how to detemine the detection of the vibrational nodes in IR and Raman Spectroscopy. My interest is to be able to use Infrared spectroscopy to characterize some diamond films that we grow in our laboratory. My advisor never included the technique in his previous works, Raman is prefered, but I would like to explore that area to check what information I can get from it. I'm more interested in the surface study of these diamond films, like to detect the amounth of Hydrogen terminated (or passivated) carbon atoms on the films. Introductory books on IR spectroscopy (that I found) only focus on gas phase (molecular vibrations). Do you know of some good books on Infrared Spectroscopy on solids? I'm interested in books that focus on the theory and interpretation of data.