Advanced Laser Concepts
Final rept. 6 Apr 1976-6 Dec 1977
TRW DEFENSE SYSTEMS GROUP REDONDO BEACH CA
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Studies directed toward the development of a chemically pumped electronic transition laser are described. A small-scale HFDF laser device was used to study excited state production in hydrogen-fluorine reactive flows. The number densities of the A doublet pi and x doublet sigma states of CN in hydrogen-fluorine cyanogen compound flames were measured. It was concluded that a population inversion between these two states was not achieved even though extremely high densities of the A doublet pi state of CN were formed. The pure chemical production of the b singlet sigma plus and a singlet delta states of NF was also demonstrated. For these studies, fluorine atoms formed in the precombustor of the laser were mixed with hydrogen to produce hydrogen atoms. These hydrogen atoms then reacted with NF2 radicals produced by the heating of N2F4 to produce the NF excited states. The densities measured were too low for laser production. However, the system may be scalable to laser proportions.
- Lasers and Masers
- Atomic and Molecular Physics and Spectroscopy