학술논문
Microfocus Source of Characteristic X-Rays for Phase-Contrast Imaging Based on a Femtosecond Fiber Laser.
Document Type
Article
Author
Source
Subject
*FEMTOSECOND lasers
*FEMTOSECOND pulses
*FIBER lasers
*X-ray imaging
*ROTATING disks
*LASER pulses
*PHOTONS
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Language
ISSN
1063-7745
Abstract
A microfocus X-ray source based on a femtosecond ytterbium-doped fiber laser with a maximum pulse energy up to 20 µJ and a repetition rate more than 100 kHz has been designed. In the scheme of tightly focusing onto the surface of a rapidly rotating copper disk, the use of the pulse burst mode and increase in repetition rate to 170 kHz provided a photon yield of 108 photons/s in 2π at a spectral brightness of 1.5 × 1011 photons/(s mm2 mrad2) (0.1% BW). The size of the designed source does not exceed 5 µm. [ABSTRACT FROM AUTHOR]