Dual beam gas ion laser

Details Dual beam gas ion laser Dual beam gas ion laser

1986-01-21

1987-07-14

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372103, 372 88, 372 87, 372 92, 372 85, H01S 308

Patent

active

046807705

ABSTRACT:
A gas ion laser employs two or more independently controlled electrical gas discharges including a longitudinal plasma arc created by a thermionic cathode and an anode and a transverse glow discharge electron beam created within a photocathode reflector. These separately controlled gas discharges are arranged in a unique topology that produces highly excited atomic ions on the optical axis of a laser cavity, giving rise to a beam of laser optical radiation characteristic of the gas ion species being excited. The longitudinal plasma arc on the optical axis is heavily populated with ground state thermal ions that are not sufficiently excited to the energetic states required for laser action. The additional energy to excite these ground state thermal ions to the upper laser states is provided by a second more energetic photo-electron and glow discharge electron beam generated by a negatively biased coaxial photocathode reflector.

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