Publications

of the reseach group

205 Publikationen filtern

Die Publikationen filtern

Highlighted authors are members of the University of Jena.

  2. Recent developments in the understanding and passive mitigation of transverse mode instability

    Year of publicationStatusReview pendingPublished in:Optical fiber technology : materials, devices and systems C. Jauregui, Y. Tu, S. Kholaif, F. Möller, G. Palma-Vega, N. Haarlammert, T. Walbaum, T. Schreiber, J. Limpert
    In this article we look at the newest developments in the understanding and mitigation of TMI in single-core fibers. This includes recent quantitative measurements that reveal the dependence of the TMI threshold on the modal content of the seed, systematic measurements on the dependence of the TMI threshold on the fiber core size, as well as the study of TMI in PM fibers including a novel passive mitigation strategy and the static modal energy transfer recently observed in these fibers.
    University Bibliography Jena:
    fsu_mods_00029154External link

  3. Pulse energy scaling of ultrafast lasers via spectral-temporal shaping and coherent combination

    Year of publication L. Stark
    University Bibliography Jena:
    fsu_mods_00019662External link

  6. Precision manufacturing of multicore fibers for superior fiber laser performance

    Year of publicationPublished in:Fiber Lasers XXII: Technology and Systems N. Haarlammert, J. Nold, S. Kuhn, C. Jauregui, J. Limpert, T. Schreiber
    University Bibliography Jena:
    fsu_mods_00024763External link

  9. Linear field-resolved spectroscopy approaching ultimate detection sensitivity

    Year of publicationPublished in:Optics Express C. Hofer, D. Bausch, L. Fürst, Z. Wei, M. Högner, T. Butler, M. Gebhardt, T. Heuermann, C. Gaida, K. Maiti, M. Huber, E. Fill, J. Limpert, F. Krausz, N. Karpowicz, I. Pupeza
    Electric-field oscillations are now experimentally accessible in the THz-to-PHz frequency range. Their measurement delivers the most comprehensive information content attainable by optical spectroscopy – if performed with high sensitivity. Yet, the trade-off between bandwidth and efficiency associated with the nonlinear mixing necessary for field sampling has so far strongly restricted sensitivity in applications such as field-resolved spectroscopy of molecular vibrations. Here, we demonstrate electric-field sampling of octave-spanning mid-infrared waves in the 18-to-39 THz (600-to-1300 cm−¹) spectral region, with amplitudes ranging from the MV/cm level down to a few mV/cm. We show that employing powerful 2-µm gate pulses is key to approaching the ultimate detection limit of capturing all photons in the temporal gate, as well as providing high linearity with respect to the detected mid-infrared field. This combination of detection sensitivity, dynamic range, and linearity enables the exploitation of the full potential of emerging high-power waveform-controlled infrared sources for (non-)linear spectroscopy of solids, liquids, and gases.
    University Bibliography Jena:
    fsu_mods_00019375External link

  10. Multiplexing information limits in multi-beam ptychography

    Year of publicationPublished in:Optics Express D. Penagos Molina, W. Eschen, C. Liu, J. Limpert, J. Rothhardt
    Ptychography is a lensless imaging technique where the sample is laterally scanned by the illuminating beam. In multi-beam ptychography multiple beams simultaneously illuminate the sample, enabling faster scanning of larger areas. In this work, we explore the potential of multi-beam ptychography with a large number of illumination channels to enhance imaging throughput. Our findings show that while spatial resolution is reduced compared to single-beam ptychography, multi-beam ptychography still significantly increases throughput. Using synthetic and experimental data, we demonstrate an almost fivefold improvement in throughput, accompanied by reduced memory footprint and overhead time. Furthermore, we present the successful implementation of massively multiplexed multi-beam ptychography with up to 64 channels. These results pave the way for efficient use of light sources with partial spatial or temporal coherence for ptychography, opening new possibilities for high-throughput imaging applications.
    University Bibliography Jena:
    fsu_mods_00023309External link

  11. 18-mJ pulse energy, 27-W average power, second harmonic generation in a Q-switched 49-core Yb-doped fiber laser

    Year of publicationPublished in:Fiber Lasers XXII: Technology and Systems M. Bahri, A. Klenke, C. Jauregui, J. Nold, N. Haarlammert, T. Schreiber, J. Limpert
    University Bibliography Jena:
    fsu_mods_00024762External link

  12. Femtosecond CPA laser system emitting 261W average power, 1.75mJ pulse energy based on coherent combination of a 49-core fiber

    Year of publicationPublished in:Fiber Lasers XXII: Technology and Systems A. Klenke, M. Bahri, C. Jauregui, J. Nold, N. Haarlammert, T. Schreiber, J. Limpert
    University Bibliography Jena:
    fsu_mods_00024765External link
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