Third-Order Nonlinear Optical Properties of Aqueous Silver Sulfide Quantum Dots
Marta Gordel-Wójcik, Magdalena Malik, Agnieszka Siomra, Marek Samoć, Marcin Nyk · 2023
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Description
Tiny crystals of silver sulfide can bend and absorb light in ways that larger pieces of the same material cannot. Marta Gordel-Wójcik and co-authors measured these effects in water-based samples of the crystals, capped with one of two short surface molecules. Using very brief laser pulses tuned across a wide span of wavelengths, they mapped where two-photon absorption, changed refraction, and saturation of ordinary absorption each appear.
The two surface coatings gave different peak strengths for two-photon absorption, both near the near-infrared range. The team also studied how the crystals group together in water and how that grouping shifts their light behaviour. Such measurements matter for imaging and sensing uses where these crystals are prized for glowing deep inside tissue.
Catalog record
| CREATOR | Marta Gordel-Wójcik, Magdalena Malik, Agnieszka Siomra, Marek Samoć, Marcin Nyk |
|---|---|
| YEAR | 2023 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 33 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |