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  Aufbau und Test eines Pulsformers für Femtosekunden-Lichtpulse

Prieß, M. (2012). Aufbau und Test eines Pulsformers für Femtosekunden-Lichtpulse. Master Thesis, Ruprecht-Karls-Universität, Heidelberg, Germany.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E544-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E546-C
Genre: Thesis

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 Creators:
Prieß, Marten1, Author              
Moshammer, Robert, Advisor
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1Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547              

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 Abstract: The main subject of this master thesis was the construction of a pulse shaper which is able to modulate femtosecond pulses of less than 20 fs duration using a programmable liquid crystal modulator. This is done primarily by changing the spectral phase of the light pulse. The modulator can create a desired spectral phase function, which causes a change of the pulse spectrum, whose Fourier transform results in the temporally shaped intensity profile of the femtosecond pulse. Part of this work was also the development of a simulation based on Mathematica which is able to calculate by entering a certain phase function the modulated waveform of the ultrashort pulse. For the characterization of the pulse shaper, the M2 of a He-Ne laser beam before and after passing the pulse shaper was measured. In addition, the auto-correlation signal of the femtosecond laser after the pulse shaper with and without phase function could be determined . The comparison of both signals resulted in a change in the auto-correlation signal when the liquid crystal modulator was enabled, which is due to the change of the temporal intensity profile of the light pulse.

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 Dates: 2012
 Publication Status: Accepted / In Press
 Pages: 87 S. : Ill., graph. Darst.
 Publishing info: Heidelberg, Germany : Ruprecht-Karls-Universität
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 Degree: Master

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