Open AccessGeneration of axial line-focus using a binary-phase Fresnel zone plate
Author(s) -
Yutong Li,
Jie Zhang,
Xin Lu,
Zuanming Jin,
D. Pepler,
C. Danson
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.2030
Subject(s) - zone plate , optics , focus (optics) , line (geometry) , femtosecond , materials science , phase (matter) , fresnel zone , fresnel zone antenna , fresnel number , laser , fresnel lens , binary number , lens (geology) , physics , geometry , diffraction , telecommunications , mathematics , quantum mechanics , smart antenna , arithmetic , dipole antenna , computer science , antenna (radio)
In this paper, a uniform axial line_focus, which is important for the x_ray lase r amplification pumped by picosecond and femtosecond laser pulses, is generated by a binary_phase Fresnel zone plate. The performances of the plate are tested u sing a ultrashort_pulse laser. The results show that the length and the width of the line_focus are 5mm and 100μm respectively, when coupled with a 125mm f ocal length lens. The ratio of the peak intensity at the center of the line focu s to the intensity outside around the line focus is 7:1