Albert, Olivier (1998) Femtosecond nonlinear index variations: direct and cascaded effects Thesis, ENSTA.
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This manuscript presents nonlinear optic applications to frequency generation and temporal measurement of nonlinear phase processes. It deals with : - a femtosecond parametric amplification setup that enable to extend experimental wavelength to the near infrared. - a linear phase shift measurement system for time resolved pump-probe experiments. - optical phonon frequency measurement in perovskites crystals, including theorical and experimental determination of the associated wave vector. - temporal measurement of the phase shift induced by cascaded second order nonlinearities. We show that it behaves like a non intantaneous process for second harmonic or sum frequency generations. The associated chirp is therefore nonlinear.
|Item Type:||Thesis (Thesis)|
|Uncontrolled Keywords:||Non linéarités en cascade|
|Deposited By:||Olivier Albert|
|Deposited On:||01 oct. 2007 02:20|
|Dernière modification:||05 nov. 2014 15:49|
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