Transverse ring RF line for CO/sub 2/ laser

Patent · Tue Aug 25 00:00:00 EDT 1987

OSTI ID:6084206

Fox, C S; Nettleton, J E; Barr, D N

A gas filled waveguide laser tube is described for use in a Fabry-Perot cavity to generate electromagnetic radiation (EMR) within a far-infrared band of wavelengths, comprising: an elongated tube of dielectric material having a cross-section necessary to achieve a desired moding or polarization, the tube being characterized by low loss propagation of high frequency EMR; a pair of end caps hermetically sealing the ends of the tube, the caps being transparent to the far-infrared band of EMR; an ionizable polyatomic gas at low pressure within the tube; a pair of diametrically opposed line conductors extending along the axis of the tube for at least the length of the gas filled portion thereof and; a series of ring shaped electrodes having a defined cross-section alternately connected to the conductors and extending around and touching the tube normal to the axis thereof for at least 75% of its circumference, the rings being electrically coupled to the line conductors to form a transmission line for RF excitation.

• Assignee: Secretary of the Army, Washington, DC
• Patent Number(s): US 4689798
• OSTI ID: 6084206
• Resource Relation: Patent File Date: Filed date 31 Jul 1986
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CARBON DIOXIDE LASERS
RF SYSTEMS
TRANSVERSE MOMENTUM
ELECTRIC CONDUCTORS
ELECTRODES
ELECTROMAGNETIC RADIATION
EXCITATION
FABRY-PEROT INTERFEROMETER
FAR INFRARED RADIATION
GASES
IONIZATION
LASER CAVITIES
TUBES
WAVEGUIDES
WAVELENGTHS
ENERGY-LEVEL TRANSITIONS
FLUIDS
GAS LASERS
INFRARED RADIATION
INTERFEROMETERS
LASERS
LINEAR MOMENTUM
MEASURING INSTRUMENTS
RADIATIONS
420300* - Engineering- Lasers- (-1989)