Pulse generation and characterization for supercontinuum experiments

POSTER

Abstract

To study and optimize ultrafast supercontinuum generation in gas-filled fibers, the input laser pulses must be well characterized. For extending the supercontinuum into the UV we started with frequency doubling ~80fs, 1mJ pulses from ~a titanium sapphire laser at 800nm through type 1 second harmonic generation in beta barium borate (BBO). After optimizing the setup, we were able to achieve a conversion efficiency of 20{\%}, which is well suited for supercontinuum generation. The resulting 400nm pulses were characterized with a spectrometer, CCD camera and~a self-diffraction frequency resolved optical gating (SD-FROG) device to estimate the pulse duration. Finally we studied the coupling efficiency into~micro structured anti-resonant hollow core fibers (ARHCF) with a core diameter of 50\textmu m. Under optimized coupling we were able to observe the fundamental spatial mode at the output proofing the guiding mechanism at 400nm.

Authors

  • Matthew Mircovich

    • University of Dayton

  • Rudrakant Sollapur

    • Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University

  • Andreas Hoffmann

    • Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University

  • Christian Spielmann

    • Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University; and Helmholtz Institute Jena

  • Alexander Hartung

    • Leibniz Institute of Photonic Technology e.V.

  • Anka Schwuchow

    • Leibniz Institute of Photonic Technology e.V.

  • Joerg Bierlich

    • Leibniz Institute of Photonic Technology e.V.

  • Jens Kobelke

    • Leibniz Institute of Photonic Technology e.V.

  • Markus A. Schmidt

    • Leibniz Institute of Photonic Technology e.V.; and Otto Schott Institute of Material Research, Abbe Center of Photonics