Full text of article: Russian language.

Abstract:
The optical fibres with a continuous core of a diameter a little micron and microstructured environment on extend technology of the softened glass of the stamp AR-Glass (Schott) are made. The measurements of spectra femtosecond of pulses Ti:sapphire of the laser on an output of the given fibres are carried out depending on geometrical parameters of structure of cross section of fibres. On the basis of the qualitative analysis of experimental curve spectral distribution of radiation is shown, that the nonlinear-optical transformation of a spectrum of pulses is observed already at a diameter of a core 6mkm and there is a generation of additional spectral components. At reduction of geometrical parameters of structure of cross section anti-Stokes the component of a spectrum is moved together from infra-red in seen area. Is shown, that in a case of hit of entrance radiation in one of lateral channels of a environment, alongside with the basic line of generation of a source in a spectrum occurs brightly expressed anti-Stokes of a component with central length of a wave about 612nm and intensity, commensurable from that basic line. On the basis of the mode analysis of structure femtosecond of pulses of radiation on an output of a fibre, is marked, that alongside with the basic style maximum are observed also waveguide of a style.

Key words:
femtosecond laser pulses, microstructured fibres, nonlinear optics, supercontinuum generation.

References:

1. Zheltikov, А.М. Microstructure fibers for optical technology / А.М. Zheltikov – Мoscow: “Fizmatlit” Publisher, 2009. – 192 p. – (in Russian).
2. Hansch, T.W. Passion to accuracy / T.W. Hansch // UFN. – 2006. – V. 176, No. 12. – P. 1368-1380. (in Russian).
3. Hartl, I. Ultrahigh-resolution optical coherence tomography using continuum generation in an air-silica microstructure optical fiber / I. Hartl, X.D. Li, C. Chudoba, R.K. Rhanta, T.H. Ko, J.G. Fujimoto, J.K. Ranka, R.S. Win­deler // Optic Let. – 2001. – V. 26. – P. 608.
4. Bjarklev, A. Photonic Crystal Fibers / A. Bjarklev, J. Broeng, A.S. Bjarklev. – Boston: Kluwer Acad. Publ., 2003.
5. Knight, J.C. All-silica single-mode optical fiber with photonic crystal cladding / J.C. Knight, T.A. Birks, P.St.J. Russell, and D.M. Atkin // Opt. Lett. – 1996. – Vol. 21. – P. 1547-1549.
6. Kobtsev, S.M. Controlling the width of a femtosecond continuum generated in a small-diameter fibre / S.M. Kob­tsev, S.V. Kukarin, N.V. Fateev // Quantum Electron. – 2002. – No. 32(1). – P. 11-13. – (in Russian).
7. Zheltikov, А.М. Optics of microstructure fibers / А.М. Zheltikov – Мoscow: Nauka, 2004. – 281 p. – (in Russian).
8. Shuyupova, Ya.О. Calculation of modes photonic crystal fiber by different methods/ Ya.О. Shuyupova, V.V. Kotlyar // Computer Optics. – 2009. – Vol. 33, No. 1. – P. 27-35. (in Russian)
9. Friberg, S.R. Nonlinear optical glasses for ultrafast optical switches / S.R. Friberg, P.W. Swith // IEEE J. Quantum Electron. – 1987. – V. 23. – P. 2089-2094.
10. http://www.nextgenpcf.eu/TrainingDay/NextGenPCF_Kobelke_nonsilica_Jan08.pdf.
11. Arkadiev, V.A. Polycapillary structure as x-ray window for differential vacuum pumping / V.A. Arkadiev, V.I. Be­loglazov, A.A. Bzhaumikhov, H.-E. Gorny, N. Langhoff, Z. Margushev, J. Schmalz, R. Wedell, H. Wolff // Proceeding of SPIE. – 1988. – Vol. 3444. – P. 436-442.
12. Ravi Kumar, V.V. Extruded soft glass photonic crystal fiber for ultrabroad supercontinuum generation / V.V. Ravi Kumar, A. George, W. Reeves, J. Knight, P. Russell, F. Omenetto, and A. Taylor // Opt. Express. – 2002. – Vol. 10. – P. 1520-1525.

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