|
Figure 5
Optical artefacts in a coloured crystal. (a) Fluorescence excitation at the surface of a crystal. (b) Fluorescence excitation at the opposing face, with the emission light path traversing the whole thickness of the crystal. (c) Absorption (black) and emission spectra [red, geometry described in (a); blue, geometry described in (b); orange and green, intermediate situations] of a crystal of the cyan fluorescent protein Cerulean (Lelimousin et al., 2009 ![]() |