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Quantum-Sized Gold Clusters as Efficient Two-Photon Absorbers
Abstract
The two-photon absorption properties of Au25 cluster has been investigated with the aid of two-photon excited fluorescence in the communication wavelength region with a cross-section of 2700 GM at 1290 nm. Additional visible fluorescence has been discovered for small gold clusters which is two-photon allowed (after excitation at 800 nm), and the absolute cross-section has been determined for gold clusters with number of gold atoms varying from 25 to all the way up to 2406 using one and two-photon excited time-resolved fluorescence upconversion measurements. Record high TPA cross-sections have been measured for quantum sized clusters making them suitable for two-photon imaging as well as other applications such as optical power limiting and lithography.
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Citations
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Shaw, P. A., Forsyth, E., Haseeb, F., Yang, S., Bradley, M., & Klausen, M. (2022) · Frontiers in Chemistry · doi:10.3389/fchem.2022.921354 · Cited by 75
Metadata
- Authors
- Ramakrishna, G., Varnavski, O., Kim, J., Lee, D., & Goodson, T.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-03-22
- Volume
- 130
- Issue
- 15
- Pages
- 5032-5033
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2095459615
- Cited by
- 348
- References
- 0
- FWCI
- 10.44
- Type
- journal article
- Language
- en
- Open access
- closed
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