Femtosecond laser fabrication of diffractive optics for spatial and spectral imaging at synchrotron infrared beamlines

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dc.contributor.authorAnand, Ven_AU
dc.contributor.authorKatkus, Ten_AU
dc.contributor.authorNg, SHen_AU
dc.contributor.authorVongsvivut, JPen_AU
dc.contributor.authorMaksimovic, Jen_AU
dc.contributor.authorKlein, ARen_AU
dc.contributor.authorBambery, KRen_AU
dc.contributor.authorLundgaard, Sen_AU
dc.contributor.authorLinklater, Den_AU
dc.contributor.authorIvanova, EPen_AU
dc.contributor.authorTobin, MJen_AU
dc.contributor.authorJuodkazis, Sen_AU
dc.date.accessioned2024-01-12T02:08:25Zen_AU
dc.date.available2024-01-12T02:08:25Zen_AU
dc.date.issued2021-03-06en_AU
dc.date.statistics2023-04-28en_AU
dc.description.abstractInfrared (IR) microspectroscopy is a powerful molecular fingerprinting tool widely used for the identification of structural and functional composition of biological and chemical samples. The IR microspectroscopy beamline at the Australian Synchrotron can be operated either with a single-point narrow-band mercury cadmium telluride (MCT) detector or a focal plane array (FPA) imaging detector with 64 × 64 pixels. For the implementation of indirect nonscanning imaging technology, the system was operated with the FPA detector. In this study, we propose an indirect IR imaging technique based on the principles of correlation optics using diffractive optical elements such as random pinhole array (RPA) and Fresnel zone plate (FZP). The spatial and spectral variations of point spread functions (PSFs) of the RPA and FZP were simulated for the synchrotron configuration. Intensity responses for 2D objects were simulated using the same simulation conditions and reconstructed using Lucy-Richardson algorithm. Fabrication of diffractive elements for IR wavelengths is often a challenging task as the IR transparent material substrates, such as barium fluoride and calcium fluoride, are highly susceptible to thermal shocks and brittle by nature. The diffractive elements were fabricated by ablating directly on a 100 nm thick gold coated substrate using femtosecond laser pulses. The simulation results and the fabrication outcomes demonstrate the feasibility of indirect imaging at the synchrotron IR beamline. © 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)en_AU
dc.identifier.articlenumber116960Cen_AU
dc.identifier.booktitleProceedings of SPIE Volume 11696, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIVen_AU
dc.identifier.citationAnand, V., Katkus, T., Ng, S. H., Vongsvivut, J., Maksimovic, J., Klein, A., Bambery, K., Lundgaard, S., Linklater, D., Ivanova, E., Tobin, M., & Juodkazis, S. (2021). Femtosecond laser fabrication of diffractive optics for spatial and spectral imaging at synchrotron infrared beamlines. Paper presented to Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIV, 6-11 March 2021, Online Only. In G. von Freymann, E. Blasco & D. Chandra,(Eds), Proceedings of SPIE Volume 11696, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIV, 116960C. doi:10.1117/12.2577511en_AU
dc.identifier.conferenceenddate2021-03-11en_AU
dc.identifier.conferencenameAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics XIVen_AU
dc.identifier.conferenceplaceOnlineen_AU
dc.identifier.conferencestartdate2021-03-06en_AU
dc.identifier.editorsG. von Freymann, E. Blasco & D. Chandraen_AU
dc.identifier.isbn9781510642270en_AU
dc.identifier.placeofpublicationBellingham, Washington, USAen_AU
dc.identifier.urihttps://doi.org/10.1117/12.2577511en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15343en_AU
dc.identifier.volume11696en_AU
dc.language.isoenen_AU
dc.publisherSociety of Photo-Optical Instrumentation Engineers (SPIE)en_AU
dc.relation.urihttps://doi.org/10.1117/12.2577511en_AU
dc.subjectFabricationen_AU
dc.subjectOpticsen_AU
dc.subjectImagesen_AU
dc.subjectBeamsen_AU
dc.subjectANSTOen_AU
dc.subjectAlgorithmsen_AU
dc.subjectInfrared spectrometersen_AU
dc.subjectSynchrotronsen_AU
dc.titleFemtosecond laser fabrication of diffractive optics for spatial and spectral imaging at synchrotron infrared beamlinesen_AU
dc.typeConference Paperen_AU
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