Singlet oxygen generator on a chip for MEMS-based COIL

Carol Livermore; Tyrone F. Hill; Luis Velásquez-García; Benjamin A. Wilhite; Alan H. Epstein; Klavs Jensen; W. Terry Rawlins; Seonkyung Lee; Steven Davis

doi:10.1117/12.707205

14 February 2007 Singlet oxygen generator on a chip for MEMS-based COIL

Carol Livermore, Tyrone F. Hill, Luis Velásquez-García, Benjamin A. Wilhite, Alan H. Epstein, Klavs Jensen, W. Terry Rawlins, Seonkyung Lee, Steven Davis

Author Affiliations +

Proceedings Volume 6454, High Energy/Average Power Lasers and Intense Beam Applications; 64540G (2007) https://doi.org/10.1117/12.707205
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

Microelectromechanical systems (MEMS) offer a promising approach for creating compact, efficient chemical oxygen iodine lasers. In this paper we report the demonstration and characterization of a chip-scale, MEMS-based singlet oxygen generator, or microSOG. The microSOG is a batch-fabricated silicon chip that is micromachined to form reactant inlets and distribution system, an array of microstructured packed bed reaction channels to ensure good mixing between the BHP and the chlorine, a gas-liquid separator that removes liquid from the output stream by capillary effects, integrated heat exchangers to remove the excess heat of reaction, and product outlets. The microSOG has successfully generated singlet delta oxygen, and the resulting singlet delta concentrations were measured in a quartz test cell downstream of the chip using absolutely-calibrated near-infrared emission measurements made by an InGaAs array spectrometer. A kinetics analysis was used to determine the concentration at the chip's outlet from the concentration at the measurement point. Singlet delta yield at the outlet was determined to be about 81% at 150 Torr plenum pressure with a 25 sccm flow of chlorine. The corresponding output flow carries about 1.4 W of power at the chip's outlet.

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Carol Livermore, Tyrone F. Hill, Luis Velásquez-García, Benjamin A. Wilhite, Alan H. Epstein, Klavs Jensen, W. Terry Rawlins, Seonkyung Lee, and Steven Davis "Singlet oxygen generator on a chip for MEMS-based COIL", Proc. SPIE 6454, High Energy/Average Power Lasers and Intense Beam Applications, 64540G (14 February 2007); https://doi.org/10.1117/12.707205

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