DPG Phi
Verhandlungen
Verhandlungen
DPG

Freiburg 2024 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 36: Quantum Metrology and Interference

Q 36.8: Talk

Wednesday, March 13, 2024, 16:15–16:30, HS 3219

Lateral shear interferometry for shape accuracy measurements of 3D-printed micro-optics — •Yanqiu Zhao1,2, Leander Siegle1,2, and Harald Giessen1,214th Physics Institute, University of Stuttgart, Stuttgart, Germany — 2Stuttgart Research Center of Photonic Engineering, Stuttgart, Germany

We compare several methods of lateral shear interferometry to assess the shape accuracy of 3D-printed micro-optics. Different aberrations are added deliberately to the lens design of the 3D-printed micro-optics and accuracy of the interferometric methods is evaluated. Accuracies up to lambda/100 can be reached for micro-optics with 140 micrometer diameter and around 570 micrometer focal lengths. Using gray scale lithography, 3D-printing aspherical singlets with RMS wavefront aberrations of only 0.01 lambda is realizable.

Keywords: Lateral shear interferometry; 3D-printed micro-optics; Wave front sensing; Wave front aberrations; Gray scale lithography

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2024 > Freiburg