Femtosecond time-resolved interferometers to determine nonlinear susceptibilities

Takayoshi Kobayashi

doi:10.1117/12.2308778

23 July 1993 Femtosecond time-resolved interferometers to determine nonlinear susceptibilities

Takayoshi Kobayashi

Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 19839Z (1993) https://doi.org/10.1117/12.2308778
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary

Abstract

For the first time, we have investigated the manyfold symmetry of (100)-cut silicon single crystals with degenerate four wave mixing (DFWM). Amplified CPM laser pulses with 90 fs duration and 100 MW peak power at 7 kHz repetition rate and 620 nm wavelength were used as excitation. The DFWM signal was detected in the forward (almost phasematched) geometry while the crystal was rotated around an axis perpendicular to its surface (i.e. to the (100) crystal plane). The anisotropy of the silicon was determined as cr=Xd/Xiiii =0.24+0.02 from the rotational angle - intensity curves at X=620 nm. The time resolved pump-and-probe type experiments showed, that the anisotropy of the DFWM signal changed within 25 fs. The dependence of the DFWM process on the polarization conditions was found to be the same as the theoretical prediction".

Citation Download Citation

Takayoshi Kobayashi "Femtosecond time-resolved interferometers to determine nonlinear susceptibilities", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 19839Z (23 July 1993); https://doi.org/10.1117/12.2308778

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