Colloquium: Günter Steinmeyer

    Date: 
    Thursday, April 11, 2013 - 3:30pm - 5:00pm
    Location: 
    Meinel 307
    Description: 

    Günter Steinmeyer from the Max Born Institute (Germany) and the Tampere University of Technology (Finland) will present "Nonlinear Optics of Supercontinua: From Rogue Waves to the Event Horizon."

    Abstract(s): 

    Supercontinuum generation is one of the most extreme scenarios in nonlinear optics, enabling the creation of spectrally broadband white light from narrowband input pulses. Supercontinuum generation involves a multitude of nonlinear optical processes working in parallel. Recently, the statistical distribution of pulse energies in fiber supercontinua has gained a lot of attention, exhibiting extreme-value distributions in their infrared tail, which are often referred to as optical rogue waves. We have recently discovered a similar phenomenon in multiple filamentation, i.e., another white light generation scenario. These optical rogue waves appear in a two-dimensional system akin to the ocean and can actually be directly observed with the naked eye. Another interesting scenario in supercontinuum generation is the so-called event-horizon condition. This condition can effectively lock radiation in the normal and the anomalous dispersion regime, which leads to a dramatic enhancement of their interaction. This effect can be exploited for all-optical switching and the implementation of an optical transistor and for generation of white-light with superior coherence properties, and it may also play an instrumental role in rogue wave generation.