Gain measurements in a non-self-sustained electric discharge pumped oxygen-iodine laser cavity

A. Hicks; K. Fredrickson; S. Tirupathi; Y. G. Utkin; W. R. Lempert; J. W. Rich; I. V. Adamovich; K. L. Galbally-Kinney; W. J. Kessler; W. T. Rawlins; P. A. Mulhall; S. J. Davis

doi:10.1117/12.738860

26 April 2007 Gain measurements in a non-self-sustained electric discharge pumped oxygen-iodine laser cavity

A. Hicks, K. Fredrickson, S. Tirupathi, Y. G. Utkin, W. R. Lempert, J. W. Rich, I. V. Adamovich, K. L. Galbally-Kinney, W. J. Kessler, W. T. Rawlins, P. A. Mulhall, S. J. Davis

Author Affiliations +

Proceedings Volume 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 63461V (2007) https://doi.org/10.1117/12.738860
Event: XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2006, Gmunden, Austria

Abstract

The paper presents results of singlet delta oxygen yield (SDO) measurements in a high-pressure, non-self-sustained discharge and small signal gain measurements on the 1315 nm iodine atom transition in the M=3 supersonic cavity downstream of the discharge. The results demonstrate operation of a stable pulser-sustainer discharge in O₂-He flows at pressures of up to 120 torr and discharge powers of up to 2.2 kW. The reduced electric field in the DC sustainer discharge ranges from 6 to 12 Td. SDO yield in the discharge is up to 5.0-5.7% at the discharge temperatures of 400-420 K. The results suggest that SDO yield exceeds the gain threshold yield at the M=3 cavity temperature by up to a factor of three, which is confirmed by gain measurements. The highest gain measured in the supersonic cavity is 0.01%/cm.

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A. Hicks, K. Fredrickson, S. Tirupathi, Y. G. Utkin, W. R. Lempert, J. W. Rich, I. V. Adamovich, K. L. Galbally-Kinney, W. J. Kessler, W. T. Rawlins, P. A. Mulhall, and S. J. Davis "Gain measurements in a non-self-sustained electric discharge pumped oxygen-iodine laser cavity", Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 63461V (26 April 2007); https://doi.org/10.1117/12.738860

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