LASER-INDUCED HOLE FILLING OF BACTERIOCHLOROPHYLL-D MONOMERS OF GREENSULFUR PHOTOSYNTHETIC BACTERIA ANTENNAE

Spectral hole burning was used to study bacteriochlorophyll d (BChl d) of green sulphur bacteria Chlorobium vibriofome. The zero phonon hole (ZPH) widths (delta(HB)) burned in the absorption and fluorescence sp ectra of BChl monomers were small in comparison with the delta(HB) of BChl oligomers in whole cells. The phenomenon of laser induced hole fi lling (LIHF) of a primary hole after burning of secondary holes at a d ifferent wavelengths is reported for BChl monomers. Relative hole fill ed area depends mono-exponentialy on the secondary burning exposition. The hole filling coefficient (tau) decreases linearly with the distan ce between the primary (lambda(B)) and the secondary burning wavelengt hs (lambda(s)) for lambda(s) < lambda(B).