Accession Number:

ADA048386

Title:

Charge Transfer Pumping of the Helium Nitrogen Laser at Atmospheric Pressures in an Electrical Avalanche Discharge.

Descriptive Note:

Technical rept. no. 1, 1 Jan-31 Oct 77,

Corporate Author:

TEXAS UNIV AT DALLAS RICHARDSON CENTER FOR QUANTUM ELECTRONICS

Personal Author(s):

• Collins,Carl B.
• Carroll,J. M.
• Taylor,K. N.

Report Date:

1977-10-31

Pagination or Media Count:

26.0

Abstract:

An Atmospheric Electrical Avalanche AEA laser, stabilized by displacement current preionization, has been developed to support the study of the collisional pumping of the N2, B yields X, electronic transition by the kinetic step He2 N2 He yields N2B 2 Sigma sub u 3He. With proper preionization, the AEA laser has been operated at a PRF of 1 to 30 Hz in an avalanche mode at 100 to 200 Asq. cm. and Ep of 5 vcmtorr. At pressures from 1 to 8 atm an essentially uniform, 30 cu. cm. volume containing a high concentration of He2 has been produced. Resulting laser output pumped by the charge transfer reaction has exceeded 1MW peak power at 427.8 nm. in a 4 nsec pulse. Efficiency with respect to the electrical power flowing through the laser tube has exceeded 2 and output pulse energies have exceeded 1 of the input pulse of energy dissipated in the laser tube. Author

Descriptors:

• *LASER PUMPING
• *ELECTRICAL LASERS
• REACTION KINETICS
• MOLECULAR VIBRATION
• NITROGEN
• CROSS SECTIONS
• ELECTRIC DISCHARGES
• IONIZATION
• CHARGE TRANSFER
• HELIUM
• AVALANCHE EFFECT(ELECTRONICS)
• QUENCHING(INHIBITION)

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE