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Special seminar on nonlinear optics applications

13th Nov 2017 - special seminar on nonlinear optics applications

On 13th of November, we would like to invite you to our next special innoFSPEC seminar given by Dr. Masood Ghotbi from the University of Kurdistan in Iran. In case of questions and for further information, please contact Dr. Stefano Minardi ().

  • speaker: Dr. Masood Ghotbi
  • affiliation: University of Kurdistan, Iran
  • title: Frequency conversion of ultrashort laser pulses based on nonlinear interactions
  • location: Leibniz-Institute for Astrophysics (AIP), An der Sternwarte 16, 14482 Potsdam; Schwarzschild house, seminar room
  • date & time: Monday, 13th of Nov 2017, 3:30-4:30 pm


The coherent laser light in different spectral regions is needed for the applications in Science, Medicine and Technology. The standard laser sources normally have a special wavelength or a very limited tunablity. Nonlinear Optics has provided a solution for these problems via various nonlinear interaction schemes. By appropriate application of different second and third order nonlinear interactions, it is possible to cover a wide area across the whole spectral range from Vacuum UV to Mid-infrared. Because of the very small values of the nonlinear interaction coefficients (10E-12 and 10E-24 for second and third order nonlinearities, respectively) higher intensities of ultrashort pulses give them the priority for the efficient interactions. In this talk we will try to present the results of the successful application of different nonlinear interactions using femtosecond pulses for the efficient generation of tunable ultrashort pulses across the different parts of the spectrum.

About the lecturer:

Dr. Masood Ghotbi received his Ph.D. degree in Physics in 2005 at ICFO-Institute of Photonic Sciences (Barcelona, Spain) with a thesis focused on the theoretical and experimental investigation on frequency conversion of femtosecond pulses with BIBO nonlinear crystal. He developed later optical parametric sources at ICFO and Max Born Institute, Berlin. Since 2012 is working as the head of Physics department at the University of Kurdistan in Iran.