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Mid-infrared supercontinuum covering the 1.4–13.3 μm molecular fingerprint region using ultra-high NA chalcogenide step-index fibre

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The mid-infrared spectral region is of great technical and scientific interest because most molecules display fundamental vibrational absorptions in this region, leaving distinctive spectral fingerprints1,2. To date, the limitations of mid-infrared light sources such as thermal emitters, low-power laser diodes, quantum cascade lasers and synchrotron radiation have precluded mid-infrared applications where the spatial coherence, broad bandwidth, high brightness and portability of a supercontinuum laser are all required. Here, we demonstrate experimentally that launching intense ultra-short pulses with a central wavelength of either 4.5 μm or 6.3 μm into short pieces of ultra-high numerical-aperture step-index chalcogenide glass optical fibre generates a mid-infrared supercontinuum spanning 1.5 μm to 11.7 μm and 1.4 μm to 13.3 μm, respectively. This is the first experimental demonstration to truly reveal the potential of fibres to emit across the mid-infrared molecular ‘fingerprint region’, which is of key importance for applications such as early cancer diagnostics3, gas sensing2,4 and food quality control5.

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Figure 1: Measured and calculated chalcogenide fibre parameters.
Figure 2: Measured fibre and atmospheric losses and fibre geometry.
Figure 3: Experimental set-up for generating and measuring MIR SC.
Figure 4: Experimental SCG results with the pump centred at 4.5 μm.
Figure 5: Experimental SCG results with the pump centred at 6.3 μm.

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  • 22 September 2014

    In the version of this Letter originally published, the received date was incorrect and should have read 14 March 2014. This error has now been corrected in all versions of the Letter.


  1. Schliesser, A., Picqué, N. & Hänsch, T. W. Mid-infrared frequency combs. Nature Photon. 6, 440–449 (2012).

    Article  ADS  Google Scholar 

  2. Allen, M. G. Diode laser absorption sensors for gas-dynamic and combustion flows. Meas. Sci. Technol. 9, 545–562 (1998).

    Article  ADS  Google Scholar 

  3. Seddon, A. B. A prospective for new mid-infrared medical endoscopy using chalcogenide glasses. Int. J. Appl. Glass Sci. 2, 177–191 (2011).

    Article  Google Scholar 

  4. Eggleton, B. J., Luther-Davies, B. & Richardson, K. Chalcogenide photonics. Nature Photon. 5, 141–148 (2011).

    Article  ADS  Google Scholar 

  5. Wegener, J., Wilson, R. H. & Tapp, H. S. Mid-infrared spectroscopy for food analysis: recent new applications and relevant developments in sample presentation methods. Trends Anal. Chem. 18, 85–93 (1999).

    Article  Google Scholar 

  6. Sun, Y. et al. Characterization of an orange acceptor fluorescent protein for sensitized spectral fluorescence resonance energy transfer microscopy using a white-light laser. J. Biomed. Opt. 14, 054009 (2009).

    Article  ADS  Google Scholar 

  7. Cimalla, P., Walther, J., Mittasch, M. & Koch, E. Shear flow-induced optical inhomogeneity of blood assessed in vivo and in vitro by spectral domain optical coherence tomography in the 1.3 µm wavelength range. J. Biomed. Opt. 16, 116020 (2011).

    Article  ADS  Google Scholar 

  8. Dunsby, C. & French, P. M. W. in Supercontinuum Generation in Optical Fibers (eds Dudley, J. M. & Taylor, J. R.) 349–366 (Cambridge Univ. Press, 2010).

    Book  Google Scholar 

  9. Domachuk, P. et al. Over 4000 nm bandwidth of mid-IR supercontinuum generation in sub-centimeter segments of highly nonlinear tellurite PCFs. Opt. Express 16, 7161–7168 (2008).

    Article  ADS  Google Scholar 

  10. Thapa, R. et al. Mid-IR supercontinuum generation in ultra-low loss, dispersion-zero shifted tellurite glass fiber with extended coverage beyond 4.5 µm. Proc. SPIE 8898, 889808 (2013).

    Article  Google Scholar 

  11. Xia, C. et al. 10.5 W time-averaged power mid-IR supercontinuum generation extending beyond 4 µm with direct pulse pattern modulation. IEEE J. Sel. Top. Quantum Electron. 15, 422–434 (2009).

    Article  ADS  Google Scholar 

  12. Moselund, P. M. et al. Supercontinuum: broad as a lamp, bright as a laser, now in the mid-infrared. Proc. SPIE 8381, 83811A (2012).

    Article  Google Scholar 

  13. Gattass, R. R. et al. All-fiber chalcogenide-based mid-infrared supercontinuum source. Opt. Fiber Technol. 18, 345–348 (2012).

    Article  ADS  Google Scholar 

  14. Shiryaev, V. S. & Churbanov, M. F. Trends and prospects for development of chalcogenide fibers for mid-infrared transmission. J. Non-Cryst. Solids 377, 225–230 (2013).

    Article  ADS  Google Scholar 

  15. Dupont, S. et al. IR microscopy utilizing intense supercontinuum light source. Opt. Express 20, 4887–4892 (2012).

    Article  ADS  Google Scholar 

  16. Slusher, R. E. et al. Large Raman gain and nonlinear phase shifts in high-purity As2Se3 chalcogenide fibers. J. Opt. Soc. Am. 21, 1146–1155 (2004).

    Article  ADS  Google Scholar 

  17. Dudley, J. M., Genty, G. & Coen, S. Supercontinuum generation in photonic crystal fiber. Rev. Mod. Phys. 78, 1135–1184 (2006).

    Article  ADS  Google Scholar 

  18. Marandi, A. et al. Mid-infrared supercontinuum generation in tapered chalcogenide fiber for producing octave-spanning frequency comb around 3 µm. Opt. Express 20, 24218–24225 (2012).

    Article  ADS  Google Scholar 

  19. Gao, W. et al. Mid-infrared supercontinuum generation in a suspended-core As2S3 chalcogenide microstructured optical fiber. Opt. Express 21, 1071–1075 (2013).

    Google Scholar 

  20. Yu, Y. et al. A stable, broadband, quasi-continuous, mid-infrared supercontinuum generated in a chalcogenide glass waveguide. Laser Photon. Rev. (2014).

  21. Yu, Y. et al. Mid-infrared supercontinuum generation in chalcogenides. Opt. Mater. Express 3, 1075 (2013).

    Article  ADS  Google Scholar 

  22. Liao, M. et al. Five-octave-spanning supercontinuum generation in fluoride glass. Appl. Phys. Express 6, 032503 (2013).

    Article  ADS  Google Scholar 

  23. Pigeon, J. J., Tochitsky, Y. S., Gong, C. & Joshi, C. Supercontinuum generation from 2–20 µm in GaAs pumped by picosecond CO2 laser pulses. Opt. Lett. 39, 3246–3249 (2014).

    Article  ADS  Google Scholar 

  24. Kubat, I. et al. Thulium pumped mid-infrared 0.9–9 µm supercontinuum generation in concatenated fluoride and chalcogenide glass fibers. Opt. Express 22, 3959–3967 (2014).

    Article  ADS  Google Scholar 

  25. Yuan, W. 2–10 µm mid-infrared supercontinuum generation in As2Se3 photonic crystal fiber. Laser Phys. Lett. 10, 095107 (2013).

    Article  ADS  Google Scholar 

  26. Hlubina, P. Spectral interferometry-based chromatic dispersion measurement of fibre including the zero-dispersion wavelength. J. Eur. Opt. Soc. Rapid Pub. 7, 12017 (2012).

    Article  Google Scholar 

  27. Sojka, L. et al. Broadband, mid-infrared emission from Pr3+ doped GeAsGaSe chalcogenide fiber, optically clad. Opt. Mater. 36, 1076–1082 (2014).

    Article  ADS  Google Scholar 

  28. Sanghera, J. S., Brandon Shaw, L. & Aggarwal, I. D. Chalcogenide glass-fiber-based mid-IR sources and applications. IEEE J. Sel. Top. Quantum Electron. 15, 114–119 (2009).

    Article  ADS  Google Scholar 

  29. McCarthy, J. et al. Spectrally tailored mid-infrared super-continuum generation in a buried waveguide spanning 1750 nm to 5000 nm for atmospheric transmission. Appl. Phys. Lett. 103, 151103 (2013).

    Article  ADS  Google Scholar 

  30. Price, J. H. V. et al. Supercontinuum generation in non-silica fibers. Opt. Fiber Technol. 18, 327–344 (2012).

    Article  ADS  Google Scholar 

  31. Ranka, J. K., Windeler, R. S. & Stentz, A. J. Visible continuum generation in air-silica microstructure optical fibers with anomalous dispersion at 800 nm. Opt. Lett. 25, 25–27 (2000).

    Article  ADS  Google Scholar 

  32. Poletti, F. & Horak, P. Dynamics of femtosecond supercontinuum generation in multimode fibers. Opt. Express 17, 11301–11312 (2009).

    Article  Google Scholar 

  33. Herrmann, J. et al. Experimental evidence for supercontinuum generation by fission of higher-order solitons in photonic fibers. Phys. Rev. Lett. 88, 173901 (2002).

    Article  ADS  Google Scholar 

  34. Gorbach, A. V. & Skryabin, D. V. Light trapping in gravity-like potentials and expansion of supercontinuum spectra in photonic-crystal fibres. Nature Photon. 1, 653–657 (2007).

    Article  ADS  Google Scholar 

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This work was supported by the European Commission through the Framework Seven (FP7) project MINERVA: MId- to NEaR infrared spectroscopy for improVed medical diAgnostics (317803; The authors also acknowledge financial support from The Danish Advanced Technology Foundation ( 132-2012-3). The authors thank P. Klarskov, K. Iwaszczuk and C. Markos of the Department of Photonics Engineering, Technical University of Denmark, for providing invaluable technical assistance with the micro-bolometer, pyroelectric detector and scanning electron microscope images, respectively.

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Authors and Affiliations



C.R.P. set up and performed the experiments, performed data analysis and was primary manuscript writer. U.M. designed the experiment, prepared fibre samples and contributed to writing the manuscript. I.K. performed the numerical work, including simulations and calculation of the fibre dispersion. B.Z. contributed to the experimental part as the laser and detection system technical expert, performed blackbody calibration and provided key input on the data analysis. S.D. and J.R. contributed to the experimental part and provided input to the set-up and experimental procedures. A.B.S. designed the thermally compatible, NA ≈ 1 core and cladding glasses for the fibre and designed processing to make the small-core fibre. T.M.B. contributed to optical fibre design, including activities focused on realizing MIR SCG in chalcogenide fibres. S.S. contributed to optical fibre design, including activities focused on realizing the Pr3+ fibre pump laser for MIR SCG in chalcogenide fibres. N.A.-M. smelted the glass and investigated the fibre geometry using scanning electron microscopy-energy dispersive X-ray spectroscopy and the near-field performance of the fibre. Z.T. fabricated the fibre and measured the fibre optical loss. D.F. fabricated the preform and the fibre. O.B. conceived the project, directed the work, and was key contributor to the fibre design particularly suitable for MIR SCG. All authors discussed the results and implications, and commented on the manuscript at all stages.

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Correspondence to Christian Rosenberg Petersen.

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Petersen, C., Møller, U., Kubat, I. et al. Mid-infrared supercontinuum covering the 1.4–13.3 μm molecular fingerprint region using ultra-high NA chalcogenide step-index fibre. Nature Photon 8, 830–834 (2014).

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