Population inversion and gain in expanding carbon fibre plasmas
Abstract
Carbon fibers of a few microns diameter, heated by a Nd:glass laser pulse offer a suitable medium for the generation of gain in the XUV spectral region. Population inversion occurs as recombination is induced by adiabatic cooling in the expansion of the hot fiber. Experimental results and their interpretation using computer modelling have given a good understanding of the underlying physics, and show two regimes of operation: one of high gain places stringent limitations of the uniformity of illumination, the other of lower gain on the length of cylindrical focus. The design constraints on high gain and acceptable experimental tolerance are discussed.
- Publication:
-
Laser Techniques in the Extreme Ultraviolet
- Pub Date:
- 1984
- Bibcode:
- 1984lteu.proc..480P
- Keywords:
-
- Carbon Fibers;
- Extreme Ultraviolet Radiation;
- Laser Materials;
- Laser Target Interactions;
- Population Inversion;
- Ultrashort Pulsed Lasers;
- Doppler Effect;
- Glass Lasers;
- High Temperature Plasmas;
- Laser Heating;
- Laser Plasmas;
- Neodymium Lasers;
- Lasers and Masers