Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 64: Quantum Optics and Photonics IV
Q 64.2: Talk
Friday, March 9, 2018, 10:45–11:00, K 0.016
frequency-tripled photon generation in argon gas far beyond the paraxial regime — •rojiar penjweini1,2, markus weber1,2, markus sondermann1,2, and gerd leuchs1,2,3 — 1Max-Planck-Institute for the Science of Light, Erlangen, Germany — 2Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, Erlangen, Germany — 3Department of Physics, University of Ottawa, Ottawa, Canada
We investigate the generation of frequency-tripled photons under the condition of extremely tight focusing, which has not been explored in experiments before. As non-linear medium we use argon gas in the regime of normal dispersion. Our experiments show that the number of frequency-tripled photons under such conditions exhibits a fifth order dependence on the intensity of the fundamental beam. We argue that the observed frequency-tripled photons are generated through six-wave-mixing. We compare our experimental results to simulations, finding a good agreement between the simulation and experiments on the number of frequency-tripled photons as a function of focus size and pressure.