Engineering Aspects Of Long Pulse CO[sub]2[/sub] Lasers Employing Plasma Discharge Electrodes

R. A. Petr; M. J. Yoder; R. B. Schaefer

doi:10.1117/12.951343

10 April 1989 Engineering Aspects Of Long Pulse CO₂ Lasers Employing Plasma Discharge Electrodes

R. A. Petr, M. J. Yoder, R. B. Schaefer

Proceedings Volume 1046, Pulse Power for Lasers II; (1989) https://doi.org/10.1117/12.951343
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

We report on an experimental long pulse CO2 laser (25uS at 100) that employed two plasma electrodes and an impedance-matched external sustainer pulser to preionize and electrically pump the CO2 laser mixture. The plasma electrodes, each measuring 7cm wide by 100cm long, were struck on by a 1011 V/S voltage trigger wavefront, and were found to have a uniform arc distribution along the electrodes in argon, but showed severe arc striations in CO2 mixtures. These striations resulted in non-uniform laser preionization, which in turn caused the sustainer discharge to constrict. Consequently the active laser volume was not pumped uniformly and the system did not lase. However, the CO2 discharge did not collapse into a low-impedance arc at energy loading greater than 350 J/1-atm and 25uS pulse duration, indicating that by improving the arc uniformity on the plasma electrodes, this approach can be useful for high energy, long pulse lasers. Finally, important engineering issues like system life, and size and weight scaling for the plasma electrode CO2 laser are discussed.

Citation Download Citation

R. A. Petr, M. J. Yoder, and R. B. Schaefer "Engineering Aspects Of Long Pulse CO₂ Lasers Employing Plasma Discharge Electrodes", Proc. SPIE 1046, Pulse Power for Lasers II, (10 April 1989); https://doi.org/10.1117/12.951343

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