Alumni

ConferencesM. Schmidberger, W. Chang, F. Biancalana, P. Russell, and N. Joly, "Nonlinear dynamics of synchronously pumped photonic crystal fiber ring cavities," in Frontiers in Optics Conference, OSA Technical Digest (online) (Optical Society of America, 2012), p. FTh3B.3.
FellowshipsStudienstiftung des deutschen Volkes, International Max Planck Research School for the Physics of Light, Elite Network of Bavaria
Current research / employment Since their first demonstration in 2000, PCFs have been extensively used for the generation of broadband supercontinua in many different contexts. Furthermore, it is well known that synchronously-pumped systems can exhibit a large variety of different nonlinear dynamics, because the fed-back perturbation can intrinsically modify the stability of the whole dynamical system. Here, we combine these two aspects and look at the dynamics of strong spectral broadening in ring cavity configurations, which are synchronously pumped by 100 fs time-bandwidth limited pulses. Period doubling as well as chaotic behaviour can be observed by changing the delay between the pump and the signal circulating inside the cavity. By employing several different types of fibre, including solid- as well as gas-filled hollow core PCF, the system’s key parameters dispersion and nonlinearity can be specifically tailored and their influence investigated. This project involves the development of semi-analytical models, numerical simulations as well as the experimental study of the ring cavity. Figure: Semi-Analytical simulation of the propagation of a 100 fs optical pulse inside the ring cavity in temporal (left side) and spectral (right side) domain.
Publications M. Schmidberger, W. Chang, F. Biancalana, P. St.J. Russell, N. Y. Joly, Nonlinear dynamics of synchronously pumped photonic crystal fiber ring cavities, Frontiers in Optics, p. FTh3B.3., , (2012)

M. Schmidberger, W. Chang, P. St.J. Russell, N. Y. Joly, Nonlinear dynamics of synchronously pumped photonic crystal fiber ring cavities, Optics Letters, 37, 3576-3578, (2012)

C. Metzner, M. Sajitz-Hermstein, M. Schmidberger, B. Fabry, Noise and critical phenomena in biochemical signaling cycles at small molecule numbers, Phys. Rev. E, 80, 021915, (2009)