Femtosecond laser-induced hard X-ray generation in air from a 100-μm-thick solution film of distilled water or Au nano-sphere suspension was carried out by using a newly-developed automatic positioning system with 1-μm precision. By positioning the solution film for the highest X-ray intensity, the optimum position shifted upstream as the laser power increased due to breakdown. Optimized positioning allowed us to control X-ray intensity with high fidelity. X-ray generation from Au nano-sphere suspension and distilled water showed different power scaling. Linear and nonlinear absorption mechanism are analyzed together with numerical modeling of light delivery.
Femtosecond laser-induced hard X-ray generation in air from a solution flow of Au nano-sphere suspension using an automatic positioning system / Hsu, W. H.; Masim, F. C. P.; Porta, M.; Nguyen, M. T.; Yonezawa, T.; Balčytis, A.; Wang, X.; Rosa, Lorenzo; Juodkazis, S.; Hatanaka, K.. - In: OPTICS EXPRESS. - ISSN 1094-4087. - 24:18(2016), pp. 19994-20001. [10.1364/OE.24.019994]
Femtosecond laser-induced hard X-ray generation in air from a solution flow of Au nano-sphere suspension using an automatic positioning system
ROSA, Lorenzo;
2016
Abstract
Femtosecond laser-induced hard X-ray generation in air from a 100-μm-thick solution film of distilled water or Au nano-sphere suspension was carried out by using a newly-developed automatic positioning system with 1-μm precision. By positioning the solution film for the highest X-ray intensity, the optimum position shifted upstream as the laser power increased due to breakdown. Optimized positioning allowed us to control X-ray intensity with high fidelity. X-ray generation from Au nano-sphere suspension and distilled water showed different power scaling. Linear and nonlinear absorption mechanism are analyzed together with numerical modeling of light delivery.
| File | Dimensione | Formato | |
|---|---|---|---|
|
oe-24-18-19994.pdf
Open access
Tipologia:
Versione pubblicata dall'editore
Dimensione
2.51 MB
Formato
Adobe PDF
|
2.51 MB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris
