Chinese Journal of Lasers, Volume. 34, Issue 9, 1260(2007)
Long-Focal-Depth Lens for Laser Plasma Diagnostic System
Aiming at the requirement of long-focal-depth elements used for the plasma diagnosis in inertial confinement fusion (ICF), a spheric lens with 150 mm aperture, 450 mm focus length, and 5 mm depth of focus is designed by nonlinear phase fitting method. In order to verify the correctness and feasibility of this method, a lens with a long-focal-length and the same F numbers (calibre 80 mm, focal length 240 mm) is fabricated. Moreover, the on-axis and transverse intensity distributions of parallel light after passing the lens are measured. The theoretical and experimental result indicates that the beam from the long-focal-depth lens has long focal depth, small focal spot and side lobe and it can meet the requirements of inertial confinement fusion.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Long-Focal-Depth Lens for Laser Plasma Diagnostic System[J]. Chinese Journal of Lasers, 2007, 34(9): 1260