1. Fully automated z-scan setup based on a tunable fs-oscillator
- Author
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Dominik Theiner, Peter M. Gruber, Markus Lunzer, Jasper Van Hoorick, Wolfgang Steiger, Aleksandr Ovsianikov, Agnes Dobos, Sandra Van Vlierberghe, Robert Liska, and Faculty of Engineering
- Subjects
Optical amplifier ,Materials science ,Matching (graph theory) ,business.industry ,Measure (physics) ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Electronic, Optical and Magnetic Materials ,010309 optics ,Wavelength ,Optics ,0103 physical sciences ,Range (statistics) ,Z-scan technique ,0210 nano-technology ,Absorption (electromagnetic radiation) ,business ,HIGH-REPETITION-RATE ,2-PHOTON ABSORPTION ,THERMAL-LENS ,3-PHOTON ,MICROFABRICATION ,4-PHOTON ,Microfabrication - Abstract
The z-scan technique has become a standard method to measure 2-photon absorption (2PA) properties of materials used for 2-photon applications. Here we present a completely automated, easily tunable z;-scan setup for spectral scanning. An algorithm collecting the required laser beam parameters allows to reliably determine the optimal working window of newly synthesized 2PA photoinitiators (PI) used for two-photon polymerization (2PP) in a wide spectral range. A complete spectrum (3 measurements per wavelength in 10 nm steps) can be obtained within an hour. Matching the wavelength used for 2PP to the maximum 2PA significantly increased the 2PP performance of the system. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
- Published
- 2019