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Proceedings Paper

Thermal free ultrafast luminescence due to nonlocal light-matter interaction (Conference Presentation)
Author(s): Masayoshi Ichimiya; Takuya Matsuda; Hajime Ishihara; Masaaki Ashida

Paper Abstract

We demonstrate ultrafast superradiance showing 10-fs decay due to the nonlocal interaction between light waves and exciton waves in CuCl mesoscopic thin films. This time constant is comparable with the thermal dephasing even at room temperature. Actually, we observed photoluminescence signal from one confined mode of translational motion of the exciton surviving at room temperature. In addition, temperature dependence of the photoluminescence spectra with multiple peaks was reproduced well by theoretical calculation. This finding opens a new avenue of “thermal free photonics”, where the exciton coherence is utilized at higher temperature.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 112780U (10 March 2020); doi: 10.1117/12.2544760
Show Author Affiliations
Masayoshi Ichimiya, Univ. of Shiga Prefecture (Japan)
Osaka Univ. (Japan)
Takuya Matsuda, Osaka Prefecture Univ. (Japan)
Hajime Ishihara, Osaka Univ. (Japan)
Osaka Prefecture Univ. (Japan)
Masaaki Ashida, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 11278:
Ultrafast Phenomena and Nanophotonics XXIV
Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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