Influence of geometry variations and defects on the near-field optical properties of pulsed compression gratings

Jianpeng Wang; Andreas Erdmann; Shijie Liu; Jianda Shao; Yunxia Jin; Hongbo He; Kui Yi

doi:10.1117/12.897335

4 October 2011 Influence of geometry variations and defects on the near-field optical properties of pulsed compression gratings

Jianpeng Wang, Andreas Erdmann, Shijie Liu, Jianda Shao, Yunxia Jin, Hongbo He, Kui Yi

Author Affiliations +

Proceedings Volume 8171, Physical Optics; 81710O (2011) https://doi.org/10.1117/12.897335
Event: SPIE Optical Systems Design, 2011, Marseille, France

Abstract

The internal electric field enhancement is critical for the laser induced damage properties of pulse compression gratings (PCG) in high-energy laser systems. Due to complex fabrication processes of PCG such as coating, interference lithography and etching, different kinds of defects, like nodular defects in multilayers and non-uniformities of the grating profiles on PCG surface, can't be practically avoided. From simulation results, we can know that some of these defects have little effect on the spectral response of optical elements, but they may produce huge changes of internal electric fields and thus decrease the damage threshold of PCG. To obtain a better understanding of the dependence of the internal electric field enhancement on these defects and their dimensions, this work is focused on the near field distributions of defective PCGs using rigorous electric magnetic field (EMF) solvers.

Citation Download Citation

Jianpeng Wang, Andreas Erdmann, Shijie Liu, Jianda Shao, Yunxia Jin, Hongbo He, and Kui Yi "Influence of geometry variations and defects on the near-field optical properties of pulsed compression gratings", Proc. SPIE 8171, Physical Optics, 81710O (4 October 2011); https://doi.org/10.1117/12.897335

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