FIGURE 2.

Intensity changes in the Raman spectrum of a single hydrated bicelle crystal under increasing power of the incident 514 nm laser. (Inset) Ratio of the intensity of the 1562 cm⁻¹ band (the C=C stretch of M) to that of the 1525 cm⁻¹ band (the same vibration for the ground state) with increasing 514 nm laser power indicates that increasing the 514 nm laser power does indeed increase the M population and promotes the photocycle of the bbR crystal.