Hole burning line shapes in a two-dimensional glass: A model for hole burning line shapes of molecules on surfaces

Photochemical Hole-burning in Photosynthetic Reaction Centers

The change in absorbance (hole spectrum) of the primary electron donor (P870) in bacterial photosynthetic reaction centers has been studied at 1.5-2.1 K following narrow-band excitation at several wavelengths within the P870 absorption band. The hole width is very large, suggesting a homogeneous linewidth on the order of 200-300 cm-‘. Possible interpretations of this highly unusual result, incl...

Persistent spectral hole burning by simultaneous two-photon absorption

We show for the ®rst time persistent spectral hole burning by simultaneous absorption of two 1138 nm photons in an inhomogeneously broadened S1 S0 …Qy† transition of unstable photo-tautomer of chlorin in polymer ®lm at low temperature. Spectrally selective hole burning is achieved due to high (10%) quantum eciency of photo-transformation in that system and high peak intensity (tens of GW/cm) o...

Slow light with persistent hole burning

R. N. Shakhmuratov, A. Rebane, P. Mégret, and J. Odeurs Instituut voor Kernen Stralingsfysica, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium Optique Nonlinéaire Théorique, Université Libre de Bruxelles, Campus Plaine CP 231, B-1050 Bruxelles, Belgium Kazan Physical Technical Institute, Russian Academy of Sciences, 10/7 Sibirsky trakt, Kazan 420029 Russia Physics ...

Spectral line shapes in dissipative systems: Molecules adsorbed on metal surfaces

Spectral hole burning and selection of conformational substates in chromoproteins.

We investigated spectral holes burnt at 1.5 K into the origins of several tautomeric forms of mesoporphyrin IX-substituted horseradish peroxidase at pH 8 under pressures up to 2 MPa. From the pressure-induced lineshift the compressibility of the apoprotein could be determined. We found that the compressibility changed significantly when measured at different tautomer origins. It was concluded t...