Influence of spectral characteristics of radiation on the accuracy of optical coherence tomography (OCT) using a laser-plasma source of soft X-rays and extreme ultraviolet
DOI:
https://doi.org/10.24425/mms.2023.155799Abstract
The paper presents an analysis of specific spectra manipulation and its metrological consequences for optical coherence tomography (OCT) in the nanometre wavelength range using a laser-plasma source of soft X-rays (SXR) and extreme ultraviolet (EUV). The focus is on extending the recorded spectra, predominantly through the stitching method. A model spectrum is used to validate the technique and transparently demonstrate the behaviour of the stitched spectral components. The model is followed by processing the experimental data and demonstrating two possible destructive factors for data processing. The first is an unbalanced spectrum. Although spectral extension toward higher photon energies significantly improves spatial resolution, it appears to be a second destructive factor. The results presented also highlighted certain technological and physical issues related to the material properties of the sample, such as potential plasmonic effects. Consequently, the results, although offering much greater flexibility and ability to adjust the final spectrum and providing better reconstruction, also recommend caution in the scope and choice of the applied modification method.References
[1] Stöhr, J. (1992). NEXAFS Spectroscopy. In Springer Series in Surface Sciences. Springer-Verlag Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-02853-7
[2] Bunker, G. (2010). Introduction to XAFS. A Practical Guide to X-Ray Absorption Fine Structure Spectroscopy, Cambridge University Press, Cambridge. https://doi.org/10.1017/cbo9780511809194
[3] Maria, M., Anisimov, A.G., Stols-Witlox, M. & Groves, R.M. (2020). Spectra stitching for ultra-high resolution, low sensitivity decay and high-speed SD-OCT. In Design and Quality for Biomedical Technologies XIII (Vol. 11231, p. 3). SPIE. https://doi.org/10.1117/12.2545157
[4] Fuchs, S., Blinne, A., Rödel, C., Zastrau, U., Hilbert, V., Wünsche, M., Bierbach, J., Frumker, E., Förster, E. & Paulus, G.G. (2012). Optical coherence tomography using broad-bandwidth XUV and soft X-ray radiation. Applied Physics B, 106(4), 789-795. https://doi.org/10.1007/s00340-012-4934-8
[5] Fuchs, S., Rödel, C., Blinne, A., Zastrau, U., Wünsche, M., Hilbert, V., Glaser, L., Viefhaus, J., Frumker, E., Corkum, P., Förster, E. & Paulus, G.G. (2016). Nanometer resolution optical coherence tomography using broad bandwidth XUV and soft X-ray radiation. Scientific Reports, 6(1). https://doi.org/10.1038/srep20658
[6] Fuchs, S., Wünsche, M., Nathanael, J., Abel, J.J., Rödel, C., Biedermann, J., Reinhard, J., Hübner, U. & Paulus, G.G. (2017). Optical coherence tomography with nanoscale axial resolution using a laser-driven high-harmonic source. Optica, 4(8), 903. https://doi.org/10.1364/optica.4.000903
[7] Wachulak, P., Bartnik, A. & Fiedorowicz, H. (2018). Optical coherence tomography (OCT) with 2 nm axial resolution using a compact laser plasma soft X-ray source. Scientific Reports, 8(1). https://doi.org/10.1038/s41598-018-26909-0
[8] Huang, D., Swanson, E.A., Lin, C.P., Schuman, J.S., Stinson, W.G., Chang, W., Hee, M.R., Flotte, T., Gregory, K., Puliafito, C.A. & Fujimoto, J.G. (1991). Optical coherence tomography. Science, 254(5035), 1178-1181. https://doi.org/10.1126/science.1957169
[9] Fercher, A.F., Drexler, W., Hitzenberger, C.K. & Lasser, T. (2003). Optical coherence tomography - principles and applications. Reports on Progress in Physics, 66(2), 239-303. https://doi.org/10.1088/0034-4885/66/2/204
[10] Wang, R.K. (1999). Resolution improved optical coherence-gated tomography for imaging through biological tissues. Journal of Modern Optics, 46(13), 1905-1912. https://doi.org/10.1080/09500349908231380
[11] Kulkarni, M., Thomas, C. & Izatt, J. (1997). Image enhancement in optical coherence tomography using deconvolution. Electronics Letters, 33(16), 1365-1367. https://doi.org/10.1049/el:19970913
[12] Izatt, J.A., Choma, M.A. & Dhalla, A. (2015). Theory of Optical Coherence Tomography. In Optical Coherence Tomography (pp. 65-94). Springer, Cham. https://doi.org/10.1007/978-3-319-06419-2_3
[13] Hee, H.R. et al. (2002). Optical coherence tomography: Theory. In Bouma, B. E. and Tearney, G. J. (Eds.), Handbook of Optical Coherence Tomography. Taylor & Francis and CRC Press, Boca Raton, 2001. https://doi.org/10.1201/9780367800819
[14] Wolf, E. (1996). Principles and development of diffraction tomography. In Consortini, A. (Ed.) Trends in Optics. (pp. 83-110). Academic Press. https://doi.org/10.1016/B978-012186030-1/50007-2
[15] Gastinger, K. (2008). Low coherence speckle interferometry (LCSI): when speckle interferometry goes sub-surface. In Proceedings of the Eighth International Conference on Correlation Optics, 70081I - 10. https://doi.org/10.1117/12.797354
[16] Bouma, B.E. and Tearney, G.J. (2002). Optical source. In Bouma, B. E. and Tearney, G. J. (Eds.), Handbook of Optical Coherence Tomography, Taylor & Francis and CRC Press, Boca Raton, 2001. https://doi.org/10.1201/9780367800819
[17] Voelz, D. (2011). Computational Fourier Optics: a MATLAB Tutorial. Tutorial Texts, SPIE Press, Bellingham, Washington USA. https://doi.org/10.1117/3.858456
[18] Goodman, J.W. (1996). Introduction to Fourier Optics. 2nd Edition, McGraw Hill Series in Electrical and Computer Engineering. Electromagnetics, McGraw Hill, New York.
[19] Ersoy, O.K. (2007). Diffraction, Fourier Optics and Imaging. Wiley Interscience, John Wiley & Sons Inc., Hoboken, New Jersey.
[20] Center for X-Ray Optics (n.d.) CXRO X-Ray Interactions with Matter, https://henke.lbl.gov/optical_constants/
[21] Born, M. & Wolf, E. (1999). Principles of Optics. 7th Edition. Cambridge University Press. https://doi.org/10.1017/cbo9781139644181
[22] Shekhar, P., Pendharker, S., Sahasrabudhe, H., Vick, D., Malac, M., Rahman, R. & Jacob, Z. (2018). Extreme ultraviolet plasmonics and Cherenkov radiation in silicon. Optica, 5(12), 1590. https://doi.org/10.1364/optica.5.001590
[23] Strickland, D.J. & Lin, D.L. (1979). Soft X-ray photoemission properties for newly modeled materials gold, silver, copper, and carbon. Final Report DNA 001-77-C-0209 for Defence Nuclear Agency
[24] Hummel, R.E. (2003). Electronic Properties of Materials. 3rd Edition, Springer Science + Business Media Inc., New York. https://doi.org/10.1007/978-1-4419-8164-6
[25] Lässer, R. & Smith, N. (1981). Interband optical transitions in gold in the photon energy range 2-25 eV. Solid State Communications, 37(6), 507-509. https://doi.org/10.1016/0038-1098(81)90488-9
[26] Haruyama, Y., Kanda, K. & Matsui, S. (2004). Study of Au-Si(100) interface by means of Si 2p core-level photoemission spectroscopy. Journal of Electron Spectroscopy and Related Phenomena, 137-140, 97-100. https://doi.org/10.1016/j.elspec.2004.02.031
[27] Franciosi, A., Niles, D.W., Margaritondo, G., Quaresima, C., Capozi, M. & Perfetti, P. (1985). Au-Si interface formation: The other side of the problem. Physical Review B, Condensed Matter, 32(10), 6917-6919. https://doi.org/10.1103/physrevb.32.6917
[28] Perfetti, P., Nannarone, S., Patella, F., Quaresima, C., Capozi, M., Savoia, A. & Ottaviani, G. (1982). Low-energy electron-loss spectroscopy and Auger-electron-spectroscopy studies of noble-metal-silicon interfaces: Si-Au system. Physical Review. B, Condensed Matter, 26(3), 1125-1138. https://doi.org/10.1103/physrevb.26.1125
[29] Arikkatt, A.J., Węgrzyński, Ł., Bartnik, A., Fiedorowicz, H. & Wachulak, P. (2022). Laboratory system for optical coherence tomography (OCT) using a laser plasma source of soft x-rays and extreme ultraviolet and focusing ellipsoidal optics. Optics Express, 30(8), 13491. https://doi.org/10.1364/oe.454656
