Fully automated z-scan setup based on a tunable fs-oscillator

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...

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Bibliographic Details
Published in:Optical materials express 2019-09, Vol.9 (9), p.3567
Main Authors: Steiger, Wolfgang, Gruber, Peter, Theiner, Dominik, Dobos, Agnes, Lunzer, Markus, Van Hoorick, Jasper, Van Vlierberghe, Sandra, Liska, Robert, Ovsianikov, Aleksandr
Format: Article
Language:English
Subjects:
Algorithms
Automation
Laser beams
Material properties
Photoinitiators
Photon absorption
Photons
Polyimide resins
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Summary: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.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.9.003567