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E. I. SCARLAT1,* , M. MIHAILESCU1, N. MIHALE2, I. A. PAUN1,3, B. S. CALIN3, C. R. LUCULESCU3, D. TRANCĂ1
- Applied Sciences, Physics Dept., University Politehnica Bucharest, Romania
- Computer Sciences, University Politehnica Bucharest, Romania
- CETAL Group, National Institute for Laser, Plasma, and Radiation Physics, Bucharest-Magurele, Romania
Direct laser writing technique by two-photon polymerization (DLW-2PP) allows to optimize the manufacturing of diffractive phase elements (DPE) using unequal phase steps. Optimization addresses the designing stage, being adapted to the specific characteristics of the DPE. The algorithm is implemented in Python language and contains an extension consisting in two iterative loops: a local one in the phase space, and a global loop in the object space. The method is tested in the cases of relevant DPEs. The results confirm the advantage of phase mapping with unequal steps compared to equal steps..
Unequal phase steps, Local iterative loop, Holographic phase map, Python software, Two-photon photolithography.
Submitted at: Oct. 12, 2018
Accepted at: April 8, 2019
E. I. SCARLAT, M. MIHAILESCU, N. MIHALE, I. A. PAUN, B. S. CALIN, C. R. LUCULESCU, D. TRANCĂ, Adaptive phase steps for diffractive phase elements using two-photon polymerization, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 3-4, pp. 153-162 (2019)
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