Could anyone recommend some good book or other references on learning the basics of ODMR? I am very new to this technique so would like to learn the basics on how this technique works and the type of materials studied.
Dear Derek, that's a good technical question. Personally I'm not familiar with this method. However, I can suggest to you the following potential useful review article in which the basic principles of Optically Detected Magnetic Resonance (ODMR) and some examples of applications in photosynthesis are outlined:
Optically detected magnetic resonance (ODMR) of photoexcited triplet states