Femtosecond laser-induced hard X-ray generation in air from a solution flow of Au nano-sphere suspension using an automatic positioning system | Zendy

Wei-Hung Hsu | Zendy; Frances Camille P. Masim | Zendy; Matteo Porta | Zendy; Mai Thanh Nguyen | Zendy; Tetsu Yonezawa | Zendy; Armandas Balčytis | Zendy; Xuewen Wang | Zendy; Lorenzo Rosa | Zendy; Saulius Juodkazis | Zendy; Koji Hatanaka | Zendy

Open Access

Femtosecond laser-induced hard X-ray generation in air from a solution flow of Au nano-sphere suspension using an automatic positioning system

Author(s) -

Wei-Hung Hsu,

Frances Camille P. Masim,

Matteo Porta,

Mai Thanh Nguyen,

Tetsu Yonezawa,

Armandas Balčytis,

Xuewen Wang,

Lorenzo Rosa,

Saulius Juodkazis,

Koji Hatanaka

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.019994

Subject(s) - optics , femtosecond , suspension (topology) , laser , distilled water , materials science , nano , absorption (acoustics) , physics , mathematics , homotopy , pure mathematics , composite material , thermodynamics

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.

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