Advances in the RF atomic iodine generator for oxygen-iodine laser

Vít Jirásek; Josef Schmiedberger; Miroslav Čenský; Jarmila Kodymová

doi:10.1117/12.880739

15 November 2010 Advances in the RF atomic iodine generator for oxygen-iodine laser

Vít Jirásek, Josef Schmiedberger, Miroslav Čenský, Jarmila Kodymová

Proceedings Volume 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 77510B (2010) https://doi.org/10.1117/12.880739
Event: 18th International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2010, Sofia, Bulgaria

Abstract

Recent advances in the RF atomic iodine generator for oxygen-iodine lasers are presented. The generator is based on the RF discharge dissociation of a suitable iodine donor immediately before its injection to the flow of singlet oxygen. The discharge is ignited directly in the iodine injector, and the configuration is ready for the laser operation. The dissociation fraction was derived from the atomic iodine number density measured at a presupposed position of laser resonator. The dissociation fraction and the fraction of RF power spent on the dissociation (discharge dissociation efficiency) were measured for the following donors: CH₃I, CF₃I and HI. A significant improvement of the discharge stability was achieved by increasing the cross-sectional area of the exit injection holes and employing a tangential inlet of working gas into the discharge chamber. The flow rates 0.15 mmol/s and 0.19 mmol/s of produced atomic iodine were achieved using the HI and CF₃I, respectively. The atomic iodine number density in the supersonic flow attained 4.22 × 10¹⁴ cm^-3. The dissociation efficiency was substantially better for HI than for studied organic iodides.

Citation Download Citation

Vít Jirásek, Josef Schmiedberger, Miroslav Čenský, and Jarmila Kodymová "Advances in the RF atomic iodine generator for oxygen-iodine laser", Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 77510B (15 November 2010); https://doi.org/10.1117/12.880739

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