Chemical oxygen-iodine laser (COIL) thermal management

Keith A. Truesdell; Charles A. Helms; Thomas Longergan; Charles F. Wisniewski; Joseph E. Scott; Keith P. Healey

doi:10.1117/12.204932

31 March 1995 Chemical oxygen-iodine laser (COIL) thermal management

Keith A. Truesdell, Charles A. Helms, Thomas Longergan, Charles F. Wisniewski, Joseph E. Scott, Keith P. Healey

Proceedings Volume 2502, Gas Flow and Chemical Lasers: Tenth International Symposium; (1995) https://doi.org/10.1117/12.204932
Event: Gas Flow and Chemical Lasers: Tenth International Symposium, 1994, Friedrichshafen, Germany

Abstract

The chemical oxygen-iodine laser (COIL) has been studied at the Phillips Laboratory since its invention in 1978. One of the most difficult challenges in COIL technology is to produce constant power for more than a few seconds; an essential feature for most applications. The key to developing a laser with these operational characteristics is management of the heat released during the production of singlet delta oxygen. Approximately 10 joules is deposited into the singlet delta oxygen generator (SOG) for every joule extracted as laser power. A recent test series demonstrated run times of 120 seconds at 9 kW by controlling the SOG reaction temperature with a flowing aqueous solution of cold hydroperoxide (BHP). This method of managing the energy released is quite effective but requires a large reservoir of cold BHP.

Citation Download Citation

Keith A. Truesdell, Charles A. Helms, Thomas Longergan, Charles F. Wisniewski, Joseph E. Scott, and Keith P. Healey "Chemical oxygen-iodine laser (COIL) thermal management", Proc. SPIE 2502, Gas Flow and Chemical Lasers: Tenth International Symposium, (31 March 1995); https://doi.org/10.1117/12.204932

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