Transient and persistent hole-burning of photosystem II preparations

John M. Hayes; D. Tang; Ryszard Jankowiak; Gerald J. Small

doi:10.1117/12.44249

1 July 1991 Transient and persistent hole-burning of photosystem II preparations

John M. Hayes, D. Tang, Ryszard Jankowiak, Gerald J. Small

Proceedings Volume 1435, Optical Methods for Ultrasensitive Detection and Analysis: Techniques and Applications; (1991) https://doi.org/10.1117/12.44249
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

Small clusters of atoms and molecules formed by supersonic expansion are found in a given experiment at different levels of aggregation and in multiple isomeric forms. The spectra of such aggregates nucleated by aromatic molecules can be analyzed in detail through the use of hole-burning spectroscopy. The present approach employs two pulsed dye lasers at approximately 1 cm-1 resolution, separated in time by 120 ns. Through detailed analysis of vibrational mode structure, the evolution of the spectroscopic properties of probe molecules can be followed as a function of cluster size and structure. Particular points of interest include the development of low-frequency modes due to intermolecular motion and the perturbation of out-of-plane modes of the aromatic host species. The application of picosecond time-correlated single- photon counting to the transfer of vibrational energy in small clusters, and some structural changes initiated by such transfer, is also described.

Citation Download Citation

John M. Hayes, D. Tang, Ryszard Jankowiak, and Gerald J. Small "Transient and persistent hole-burning of photosystem II preparations", Proc. SPIE 1435, Optical Methods for Ultrasensitive Detection and Analysis: Techniques and Applications, (1 July 1991); https://doi.org/10.1117/12.44249

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