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

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

doi:10.1117/12.611031

23 March 2005 Experimental effects of atomic oxygen on the development of an electric discharge oxygen iodine laser

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

Author Affiliations +

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611031
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

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 the quenching of I* by O atoms. We have taken a series of measurements of O₂(¹Δ) emission, I* emission, O-atom titrations, gain/absorption, and O₂(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 O₂(a¹Δ) was produced in a flowing electric discharge. Excess atomic oxygen was scavenged by NO₂ to minimize the deleterious effects. The discharge production of O₂(a¹Δ) 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.

Citation Download Citation

David L. Carroll, Joseph T. Verdeyen, Darren M. King, J. W. Zimmerman, J. K. Laystrom, B. S. Woodard, G. F. Benavides, K. Kittell, and Wayne C. Solomon "Experimental effects of atomic oxygen on the development of an electric discharge oxygen iodine laser", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611031

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available