Dual-color co-filamentation in Argon

Dual-color co-filamentation in Argon.

We investigate both experimentally and theoretically the mechanisms driving the co-filamentation of two ultrashort laser pulses at 800 and 400 nm in Argon. The cross-Kerr lens and cross-phase modulation between the two filaments of different colors bridging both the continuum spectra and the plasma channels induced by the individual pulses. This dual-color filamentation also results in the simu...

Laser noise compression by filamentation at 400 nm in argon.

Filamentation is an efficient way to produce an intense and spectrally broad, but poorly stable, source for coherent control spectroscopy. We first described both theoretically and experimentally the filamentation and broadening of a 410 nm ultrashort laser pulse in Argon. By observing the theoretical and experimental spectral cross-correlation in the filament, we then show that the stability o...

Spectral dependence of purely-Kerr driven filamentation in air and argon

Remote THz generation from two-color filamentation: long distance dependence.

Remote terahertz (THz) generation from two-color filamentation is investigated as a function of the onset position of filaments. THz signals emitted by filaments produced at distances up to 55 m from the laser source were measured. However, from 9 m to 55 m, the THz signal decayed monotonically for increasing onset positions. With a simple calculation, the dominant factors associated to this de...

Technical study of historical tiles of azure and yellow color Spectrum in mosaic and dual tiles

In Iranian architecture, colors were a powerful tool in design that, by using them correctly in decorations, added to the identity and impact of that space. One of the techniques of architects in decorating the space has been the use of complementary colors to create a proper harmony in the viewer's eyes. In this experimental-analytical study, CIE Lab analysis was used to quantitatively measu...