Open AccessBio-inspired surface aberration mitigation technique for high-frequency conversion efficiency of large-aperture nonlinear optics
Author(s) -
Zheng Zhang,
Ye Lang,
Dongya Chu,
Guoqing Pei,
Weidong Du,
Tianye Liu,
Hui Wang,
Xu Xu
Publication year - 2019
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.27.027962
Subject(s) - optics , energy conversion efficiency , materials science , aperture (computer memory) , spatial frequency , inertial confinement fusion , nonlinear optics , optoelectronics , physics , laser , acoustics
Low-frequency conversion efficiency severely limits the 3ω ultraviolet energy density at the target of inertial confinement fusion facilities. Here, we present a bio-inspired surface aberration mitigation (SAM) technique that could significantly reduce the crystal surface aberration and realize high frequency conversion efficiency over a clear aperture of 400 mm × 400 mm. Numerical models are utilized to optimize and verify the mechanical properties and physical performance of the SAM technique. In addition, the influences of various operation conditions on surface aberration, angle-detuning magnitude, and frequency conversion efficiency are illustrated. Finally, the process stability and online feasibility of this new approach are validated by the established offline characterization system and in situ imaging system.