Photonics Research, Volume. 11, Issue 7, 1303(2023)
Giant two-photon absorption of anatase TiO2 in Au/TiO2 core-shell nanoparticles
Fig. 1. Steady-state absorption spectra of the samples investigated in this work. The two pink arrows show the LSPR peaks of
Fig. 2. Time-energy TA maps and the corresponding spectral traces at 1, 100, and 800 ps. (a), (b) Bare anatase
Fig. 3. Fluence dependence of the bands appearing in the plasmon-excited TA spectra of
Fig. 4. Comparison of the TA spectra of the three measured samples (rescaled for clarity). The blue solid line is the transient response of bare anatase
Fig. 5. Comparison of the TA time traces between
Fig. 6. Fluence dependence of the 3.8 eV band of TA spectra of
Fig. 7. Time dependence of the slopes of the fluence dependence of the
Fig. 8. TA spectra at 10 ps of (a) bare
Fig. 9. Fluence dependence of the
Fig. 10. Transmission electron microscopy images of (a) pure Au NPs, (b)
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Lijie Wang, Tsz Him Chow, Malte Oppermann, Jianfang Wang, Majed Chergui. Giant two-photon absorption of anatase TiO2 in Au/TiO2 core-shell nanoparticles[J]. Photonics Research, 2023, 11(7): 1303
Category: Optical and Photonic Materials
Received: Feb. 15, 2023
Accepted: May. 21, 2023
Published Online: Jun. 29, 2023
The Author Email: Majed Chergui (majed.chergui@epfl.ch)