Ultrafast pump & probe investigations on the interaction of femtosecond laser pulses with glass

Alexander Horn; Hooman Khajehnouri; Ernst-Wolfgang Kreutz; Reinhart Poprawe

doi:10.1117/12.516935

1 August 2003 Ultrafast pump and probe investigations on the interaction of femtosecond laser pulses with glass

Alexander Horn, Hooman Khajehnouri, Ernst-Wolfgang Kreutz, Reinhart Poprawe

Proceedings Volume 4948, 25th International Congress on High-Speed Photography and Photonics; (2003) https://doi.org/10.1117/12.516935
Event: 25th international Congress on High-Speed photography and Photonics, 2002, Beaune, France

Abstract

The change of the matrix structure of glass is investigated during and after irradiation with ultrashort pulsed laser radiation (100 fs < t_p; < 3 ps) at the wavelength λ = 810 nm. The dynamics of the plasma expansion and the stress formations are visualized by time-resolved Normarski-photography. Optical microscopy visualizes the structural changes in glass. The spatial stress distribution and the refractive index change are shown in the time range 100 fs < t < 120 ns. The ionization state of atoms and/or the formation of color centers has been investigated by transient absorption spectroscopy (TAS) in the time regime 100 fs < t < 120 ns. The temporal change of the spectra shows different regimes, which can be explained by the electron and phonon relaxation.

Citation Download Citation

Alexander Horn, Hooman Khajehnouri, Ernst-Wolfgang Kreutz, and Reinhart Poprawe "Ultrafast pump and probe investigations on the interaction of femtosecond laser pulses with glass", Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); https://doi.org/10.1117/12.516935

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