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Quantum-Sized Gold Clusters as Efficient Two-Photon Absorbers

Ramakrishna, Guda, Varnavski, Oleg, Kim, Junhyung, Lee, Dongil, Goodson, Theodore·2008·Journal of the American Chemical Society

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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Metadata

Authors
Ramakrishna, G., Varnavski, O., Kim, J., Lee, D., & Goodson, T.
Venue
Journal of the American Chemical Society
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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CoChat. (2026). Citation check: Quantum-Sized Gold Clusters as Efficient Two-Photon Absorbers. https://app.cochat.ai/papers/10.1021/ja800341v
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Ramakrishna, G., Varnavski, O., Kim, J., Lee, D., & Goodson, T. (2008). Quantum-Sized Gold Clusters as Efficient Two-Photon Absorbers. Journal of the American Chemical Society. https://doi.org/10.1021/ja800341v

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