Experimental effects of atomic oxygen on the development of an electric discharge oxygen iodine laser

D. L. Carroll; J. T. Verdeyen; D. M. King; J. W. Zimmerman; J. K. Laystrom; B. S. Woodard; G. F. Benavides; K. Kittell; W. C. Solomon

doi:10.1117/12.611031

Experimental effects of atomic oxygen on the development of an electric discharge oxygen iodine laser

D. L. Carroll, J. T. Verdeyen, D. M. King, J. W. Zimmerman, J. K. Laystrom, B. S. Woodard, G. F. Benavides, K. Kittell, W. C. Solomon

Research output: Contribution to journal › Conference article › peer-review

Abstract

As the development of the electric discharge iodine laser continues, the role of oxygen atoms downstream of the discharge region was found to be very significant. One of the largest uncertainties is the rate of quenching of I* by O atoms. We have taken a series of measurements of O ₂( ¹Δ) emission, I* emission, O-atom titrations, gain/absorption, and O ₂( ¹Δ) yield to explore the significant positive and negative roles that O atoms play in the kinetics of the system that influence the gain. An estimate of the reaction rate for I* + O is provided. This investigation of the effects of atomic oxygen led to the measurement of positive gain on the 1315 nm transition of atomic iodine where the O ₂(a ¹Δ) was produced in a flowing electric discharge. Excess atomic oxygen was scavenged by NO ₂ to minimize the deleterious effects. The discharge production of O ₂(a ¹Δ) was enhanced by the addition of a small proportion of NO to lower the ionization threshold of the gas mixture. The electric discharge was followed by a continuously flowing supersonic cavity, which was employed to lower the flow temperature.

Original language	English (US)
Article number	38
Pages (from-to)	215-220
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5777
Issue number	PART I
DOIs	https://doi.org/10.1117/12.611031
State	Published - 2005
Event	XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, GCL/HPL 2004 - Prague, Czech Republic Duration: Aug 30 2004 → Sep 3 2004

Keywords

COIL
Chemical oxygen-iodine laser
DOIL
ElectriCOIL
RF excitation of oxygen
Singlet-delta oxygen

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Online availability

10.1117/12.611031

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Carroll, D. L., Verdeyen, J. T., King, D. M., Zimmerman, J. W., Laystrom, J. K., Woodard, B. S., Benavides, G. F., Kittell, K., & Solomon, W. C. (2005). Experimental effects of atomic oxygen on the development of an electric discharge oxygen iodine laser. Proceedings of SPIE - The International Society for Optical Engineering, 5777(PART I), 215-220. Article 38. https://doi.org/10.1117/12.611031

Carroll, DL, Verdeyen, JT, King, DM, Zimmerman, JW, Laystrom, JK, Woodard, BS, Benavides, GF, Kittell, K & Solomon, WC 2005, 'Experimental effects of atomic oxygen on the development of an electric discharge oxygen iodine laser', Proceedings of SPIE - The International Society for Optical Engineering, vol. 5777, no. PART I, 38, pp. 215-220. https://doi.org/10.1117/12.611031

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abstract = "As the development of the electric discharge iodine laser continues, the role of oxygen atoms downstream of the discharge region was found to be very significant. One of the largest uncertainties is the rate of quenching of I* by O atoms. We have taken a series of measurements of O 2( 1Δ) emission, I* emission, O-atom titrations, gain/absorption, and O 2( 1Δ) yield to explore the significant positive and negative roles that O atoms play in the kinetics of the system that influence the gain. An estimate of the reaction rate for I* + O is provided. This investigation of the effects of atomic oxygen led to the measurement of positive gain on the 1315 nm transition of atomic iodine where the O 2(a 1Δ) was produced in a flowing electric discharge. Excess atomic oxygen was scavenged by NO 2 to minimize the deleterious effects. The discharge production of O 2(a 1Δ) was enhanced by the addition of a small proportion of NO to lower the ionization threshold of the gas mixture. The electric discharge was followed by a continuously flowing supersonic cavity, which was employed to lower the flow temperature.",

keywords = "COIL, Chemical oxygen-iodine laser, DOIL, ElectriCOIL, RF excitation of oxygen, Singlet-delta oxygen",

author = "Carroll, {D. L.} and Verdeyen, {J. T.} and King, {D. M.} and Zimmerman, {J. W.} and Laystrom, {J. K.} and Woodard, {B. S.} and Benavides, {G. F.} and K. Kittell and Solomon, {W. C.}",

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doi = "10.1117/12.611031",

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note = "XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, GCL/HPL 2004 ; Conference date: 30-08-2004 Through 03-09-2004",

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AU - Carroll, D. L.

AU - Verdeyen, J. T.

AU - King, D. M.

AU - Zimmerman, J. W.

AU - Laystrom, J. K.

AU - Woodard, B. S.

AU - Benavides, G. F.

AU - Kittell, K.

AU - Solomon, W. C.

PY - 2005

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N2 - As the development of the electric discharge iodine laser continues, the role of oxygen atoms downstream of the discharge region was found to be very significant. One of the largest uncertainties is the rate of quenching of I* by O atoms. We have taken a series of measurements of O 2( 1Δ) emission, I* emission, O-atom titrations, gain/absorption, and O 2( 1Δ) yield to explore the significant positive and negative roles that O atoms play in the kinetics of the system that influence the gain. An estimate of the reaction rate for I* + O is provided. This investigation of the effects of atomic oxygen led to the measurement of positive gain on the 1315 nm transition of atomic iodine where the O 2(a 1Δ) was produced in a flowing electric discharge. Excess atomic oxygen was scavenged by NO 2 to minimize the deleterious effects. The discharge production of O 2(a 1Δ) was enhanced by the addition of a small proportion of NO to lower the ionization threshold of the gas mixture. The electric discharge was followed by a continuously flowing supersonic cavity, which was employed to lower the flow temperature.

AB - As the development of the electric discharge iodine laser continues, the role of oxygen atoms downstream of the discharge region was found to be very significant. One of the largest uncertainties is the rate of quenching of I* by O atoms. We have taken a series of measurements of O 2( 1Δ) emission, I* emission, O-atom titrations, gain/absorption, and O 2( 1Δ) yield to explore the significant positive and negative roles that O atoms play in the kinetics of the system that influence the gain. An estimate of the reaction rate for I* + O is provided. This investigation of the effects of atomic oxygen led to the measurement of positive gain on the 1315 nm transition of atomic iodine where the O 2(a 1Δ) was produced in a flowing electric discharge. Excess atomic oxygen was scavenged by NO 2 to minimize the deleterious effects. The discharge production of O 2(a 1Δ) was enhanced by the addition of a small proportion of NO to lower the ionization threshold of the gas mixture. The electric discharge was followed by a continuously flowing supersonic cavity, which was employed to lower the flow temperature.

KW - COIL

KW - Chemical oxygen-iodine laser

KW - DOIL

KW - ElectriCOIL

KW - RF excitation of oxygen

KW - Singlet-delta oxygen

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Experimental effects of atomic oxygen on the development of an electric discharge oxygen iodine laser

Abstract

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