Strong Field-Induced Frequency Conversion of Laser Radiation in Plasma Plumes: Recent Achievements

Figure 9

Carbon harmonic spectra as a function of neon pressure in the hollow fiber. The corresponding fundamental wave spectra measured in front of the vacuum chamber are presented on the left side. The plasma was created using the 10 ns pulses. 𝜆₀ is the central weighted wavelength of the spectral distribution. The color scale indicates the harmonic intensity [46].