In the current paper the influence of the metallic nanoparticles trapped by arabinogalactan (AG) molecule on the AG refractive index is studied. A convenient approach for refractive index measurement by means of wavelength-domain interferometry is proposed.
In this paper we measured the dependence of the signal of the third harmonic and terahertz radiation on the mutual
polarization of the first and second harmonic to compare the mechanisms of their generation. For this purpose we used
the output radiation of laser system Spitfire pro with the following parameters: pulse duration 35 fs, central wavelength
800nm, repetition rate 1kHz, energy of the first and second harmonic are 2mJ and 240mJ respectively. The radiation was
focused by parabolic mirror with focal length 7,5 cm in air. The energy of terahertz and third harmonic radiation was
measured by Holey cell and photomultiplier respectively.