Influence of timing jitter on nonlinear dynamics of a photonic crystal
fiber ring cavity
M. Schmidberger,
W. Chang,
P. St. J. Russell,
N. Y. Joly
OPTICS LETTERS
37
(17)
3576-3578
(2012)
We demonstrate that timing jitter has a strong influence on supercontinua generated in a photonic crystal fiber ring cavity synchronously pumped by 140 fs pulses. The global dynamics with respect to cavity detuning is analyzed both numerically and experimentally by tracking the cavity pulse energy. The results show that low-frequency timing jitter, induced by both the pump oscillator and the external cavity, masks the fine underlying bifurcation structure of the system. Numerical simulations in the absence of timing jitter reveal that the system dynamics fall into four qualitatively different regimes. The existence of these regimes is experimentally observed in first-return diagrams. (c) 2012 Optical Society of America
Kagome hollow-core photonic crystal fiber probe for Raman spectroscopy
Petru Ghenuche,
Silke Rammler,
Nicolas Y. Joly,
Michael Scharrer,
Michael Frosz,
Jerome Wenger,
Philip St J. Russell,
Herve Rigneault
OPTICS LETTERS
37
(21)
4371-4373
(2012)
We demonstrate the use of a large-pitch Kagome-lattice hollow-core photonic crystal fiber probe for Raman spectroscopy. The large transmission bandwidth of the fiber enables both the excitation and Raman beams to be transmitted through the same fiber. As the excitation beam is mainly transmitted through air inside the hollow core, the silica luminescence background is reduced by over 2 orders of magnitude as compared to standard silica fiber probes, removing the need for fiber background subtraction. (C) 2012 Optical Society of America
Kontakt
Forschungsgruppe Nicolas Joly
Professur für Photonik Friedrich-Alexander-Universität Erlangen-Nürnberg
und
Max-Planck-Institut für die Physik des Lichts Staudtstr. 2 91058 Erlangen, Germany
