"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Adaptive phase steps for diffractive phase elements using two-photon polymerization

E. I. SCARLAT1,* , M. MIHAILESCU1, N. MIHALE2, I. A. PAUN1,3, B. S. CALIN3, C. R. LUCULESCU3, D. TRANCĂ1

Affiliation

  1. Applied Sciences, Physics Dept., University Politehnica Bucharest, Romania
  2. Computer Sciences, University Politehnica Bucharest, Romania
  3. CETAL Group, National Institute for Laser, Plasma, and Radiation Physics, Bucharest-Magurele, Romania

Abstract

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..

Keywords

Unequal phase steps, Local iterative loop, Holographic phase map, Python software, Two-photon photolithography.

Submitted at: Oct. 12, 2018
Accepted at: April 8, 2019

Citation

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)