Abstract
Optical limiting (OL) properties of two hexagonal prism metal clusters, W2Ag4S8(PPh3)4 and Mo2Ag4S8(PPh3)4 doped in polymethyl methacrylate (PMMA) polymer and DMF solutions, respectively, were contrastively investigated by using nanosecond laser pulses at 532 nm with a repetition rate of 1 Hz. Experimental results show that the output fluence of DMF solutions for the two samples are both lower than that of their PMMA polymers at a given input fluence; this means DMF solutions of W 2Ag4S8(PPh3)4 and Mo 2Ag4S8(PPh3)4 have better OL properties than that of solid PMMA polymers. The reason is explained by a stimulated scattering theory. That is because the scattering degree of solutions is stronger than that of the corresponding solid polymers due to large density perturbations for solution samples.
| Original language | English |
|---|---|
| Pages (from-to) | 3732-3734 |
| Number of pages | 3 |
| Journal | Physica B: Condensed Matter |
| Volume | 405 |
| Issue number | 17 |
| DOIs | |
| State | Published - 1 Sep 2010 |
Keywords
- Hexagonal prism metal cluster
- Optical limiting
- Polymers
- Stimulated scattering
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