Anti-Stokes fluorescence from chlorophyll a. (May 2019)

• Record Type: Journal Article
• Authors: Emura, Hidetoshi; Noji, Tomoyasu; Kondo, Masaharu; Amao, Yutaka; Sugisaki, Mitsuru
• Is Part Of: Journal of physics. Volume 1220(2019)
• Publication Date: 2019-05
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1220/1/012043
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Anti-Stokes fluorescence from chlorophyll a molecules dispersed in diethyl ether has been observed. From the excitation power dependence of the fluorescence spectrum, it is concluded that the anti-Stokes fluorescence appears via the linear optical process. To consider the relationship between the observed spectral shape and vibrational modes, the model spectral density has been determined based on the Raman spectrum and real-time coherent vibrational oscillation signals. The absorption spectrum observed in the experiment was well reproduced by the calculation, indicating the validity of the model spectral density. The involvement of the low-frequency vibrational modes in the anti-Stokes fluorescence process is discussed.