Captain FRET recommends:
“A comprehensive book about a topic that everybody loves. Powerful and full of mysteries.”

FRET – Förster Resonance Energy Transfer From Theory to Applications
Medintz, Igor / Hildebrandt, Niko (eds.)
ISBN: 978-3-527-32816-1 (Wiley-VCH, Weinheim)
DOI: 10.1002/9783527656028

Book website (Wiley)

Free sample chapter with many photos of Theodor Förster:

pdf download