Visentin, F. and Hormann, M. and Cerullo, G. and Camargo, F. V. A. (2023) Studying ultrafast carrier diffusion in spatially heterogeneous samples with transient holographic microscopy. Il nuovo cimento C, 46 (4). pp. 1-4. ISSN 1826-9885
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Abstract
Transient absorption microscopy enables the observation of ultra fast excited-state dynamics with spatial resolution. Conventional implementations are technologically limited to small fields of view around a single diffraction-limited spot, offering no statistical information on the photophysics of the sample. We recently used off-axis holography to demonstrate an all-optical lock-in camera enabling widefield transient imaging at arbitrary repetition rate. Here, we use a structured excitation pattern comprised of hundreds of diffraction-limited spots as an effective way to study diffusion of carriers in semiconductors, whilst probing the sample’s heterogeneity over an area of (≈60μm2), more than 100 times larger than current techniques. We envision that this technique can be used to provide a much more complete picture of photophysical processes in heterogeneous samples.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 15 Feb 2024 10:36 |
| Last Modified: | 15 Feb 2024 10:36 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/22689 |
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