Photopolymer characterization by high frequency pulsed laser

D. Puerto; S. Gallego; J. J. Sirvent-Verdú; M. Ortuño; A. Márquez; I. Pascual; A. Belendez

doi:10.1117/12.2622684

24 May 2022 Photopolymer characterization by high frequency pulsed laser

D. Puerto, S. Gallego, J. J. Sirvent-Verdú, M. Ortuño, A. Márquez, I. Pascual, A. Belendez

Proceedings Volume 12151, Photosensitive Materials and their Applications II; 1215105 (2022) https://doi.org/10.1117/12.2622684
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

Maximizing phase modulation in photopolymers remains a challenge in order to use these materials to fabricate photonics devices. Different material compositions and irradiation conditions have been studied in order to achieve it. One of the main conclusions has been that with continuous laser exposure better results are achieved. However, our results show that higher phase modulation can be achieved using pulsed laser. The study has been done with crosslinked acrylamide-based photopolymers (AA/PVA), Biophotopol and Holographic Polymer-Dispersed Liquid Crystals (HPDLC) exposed with a pulsed laser (532 nm). Thus, phase modulation increases of 8-15% have been achieved between pulsed laser and continuous laser exposure, with a maximum phase depth of 3π radians in AA/PVA, ~3π/2 in Biophotopol and ~π in H-PDLC. This opens the door to the use of this photopolymer in large-scale manufacturing, such as H-PDLC photopolymers to fabricate tunable lenses using the laser-induced direct transfer (LIFT) technique.

Conference Presentation

Citation Download Citation

D. Puerto, S. Gallego, J. J. Sirvent-Verdú, M. Ortuño, A. Márquez, I. Pascual, and A. Belendez "Photopolymer characterization by high frequency pulsed laser", Proc. SPIE 12151, Photosensitive Materials and their Applications II, 1215105 (24 May 2022); https://doi.org/10.1117/12.2622684

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