Generation of second harmonics in an iodine-laser-produced plasma

Karel Masek; Karel Rohlena; Josef Krasa; O. Stirand; Milos Chvojka; Bozena Kralikova; Jiri Skala; E. Krousky

doi:10.1117/12.144509

23 April 1993 Generation of second harmonics in an iodine-laser-produced plasma

Karel Masek, Karel Rohlena, Josef Krasa, O. Stirand, Milos Chvojka, Bozena Kralikova, Jiri Skala, E. Krousky

Proceedings Volume 1980, Iodine Lasers and Applications; (1993) https://doi.org/10.1117/12.144509
Event: Iodine Lasers and Applications, 1992, Bechyne Castle, Czechoslovakia

Abstract

The second harmonic (SH) signal was monitored from a laser plasma created on an Al foil target by the pulses of an iodine photodissociation laser system. Both the time integrated spectra and the time dependence of the output from a narrow spectral interval in the vicinity of the SH were measured. For a p-polarized wave the spectra indicate regions of resonant absorption and of parametric turbulence. Interpretations of physical mechanisms underlying both the spectral regions are given. The dependence of the SH intensity on the incident laser power density is not clearly understood in all cases, but it seems to indicate a possible role of the plasma density scale length changing with the laser energy.

Citation Download Citation

Karel Masek, Karel Rohlena, Josef Krasa, O. Stirand, Milos Chvojka, Bozena Kralikova, Jiri Skala, and E. Krousky "Generation of second harmonics in an iodine-laser-produced plasma", Proc. SPIE 1980, Iodine Lasers and Applications, (23 April 1993); https://doi.org/10.1117/12.144509

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