Freiburg 2019 – wissenschaftliches Programm
Sitzungen | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
FM: Fall Meeting
FM 9: Quantum Networks: Platforms and Components I
FM 9.4: Talk
Montag, 23. September 2019, 14:45–15:00, 1098
High-repetition-rate frequency comb conversion in synchronously driven non-centrosymmetric optical microresonators — •Jan Szabados1, Ingo Breunig1,2, and Karsten Buse1,2 — 1Laboratory for Optical Systems, Department of Microsystems Engineering - IMTEK, University of Freiburg, Georges-Köhler-Allee 102, D - 79110 Freiburg, Germany — 2Fraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, D - 79110 Freiburg, Germany
We demonstrate the broadband conversion of a high-repetition rate frequency comb from the near-infrared (NIR) to the mid-infrared (MIR), visible (VIS) and ultraviolet (UV) spectral ranges. The employed lithium niobate microresonators are synchronously pumped by a frequency comb with a repetition rate in excess of 10 GHz and pico- to femtosecond pulse duration. Cascaded second-order nonlinear-optical processes transfer significant parts of the fundamental frequency comb to harmonic and sub-harmonic optical frequencies. This way, the second and the third harmonics in the visible and the fourth harmonic in the ultra-violet spectral region are generated. Also, subharmonic generation of the fundamental comb lines into the mid-infrared spectral range via degenerate parametric oscillation is demonstrated. Non-degenerate processes enable wavelength-tunable signal- and idler-comb generation. Furthermore, first steps towards generating frequency combs based purely on second-order nonlinearities will be discussed.