Frankfurt 2006 – wissenschaftliches Programm
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Q: Quantenoptik und Photonik
Q 55: Nichtlineare optische Effekte und Lichtquellen II
Q 55.2: Vortrag
Mittwoch, 15. März 2006, 14:15–14:30, H14
Supercontinuum Generation using a Liquid-core Photonic Crystal Fiber — •Rui Zhang1, Jörn Teipel1, and Harald Giessen2 — 1Institute of Applied Physics, University of Bonn, 53115, Bonn — 2Universitaet Stuttgart, 4. Physikalisches Institut, Pfaffenwaldring 57, 70550, Stuttgart
We have designed a highly nonlinear hollow-core photonic crystal fiber by filling its core with highly nonlinear liquids such as carbon disulfide. The fiber is shown to have an extremely high nonlinear parameter g, which, in the case of the incident pulse duration of 500 fs, is more than a thousand times as large than g in silica-core photonic crystal fibers. The group velocity dispersion curve of the fiber exhibits an anomalous dispersion in the near infrared, and its zero-dispersion wavelength is around 1.55 mm. This leads to potentially significant improvements and a large bandwidth in supercontinuum generation at very low pulse energies. The spectral and temporal properties of the supercontinuum generation in liquid-core photonic crystal fibers are simulated by solving the nonlinear Schrödinger equation with the response function of carbon disulfide. In order to accomplish this task, we had to determine a complete quantitative response function in the femtosecond and picosecond regime for the first time.