Population inversion in laser-initiated vacuum arcs. Annual report, 1 February 1984-31 January 1985
Technical Report
·
OSTI ID:5604398
A detailed study of resonant photo-excitation of CII ions in a vacuum arc discharge by line radiation from laser-produced, AlIII ions was completed. Although enhanced fluorescence by up to a factor of eight in CII at 2138 A was observed, the collisional-radiative kinetics are such as to prevent a population inversion from building up under the conditions of the experiments. This unfavorable conclusion prompted the identification of a new class of Be-like, photo-excited lasers with potential laser wave-lengths from 2177 A in CIII down to 230 A in MgIX. Design considerations for such lasers are presented. Initial experiments in CIII pumped by MnVI line radiation have shown fluorescence enhancements in CIII at 2177 A by up to a factor of 150. Optimization of the pump plasma geometry has increased this enhancement to a factor of 500. Gain estimates are given which suggest that a laser can be constructed at 2177 A.
- Research Organization:
- Yale Univ., New Haven, CT (USA)
- OSTI ID:
- 5604398
- Report Number(s):
- AD-A-151958/6/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420300 -- Engineering-- Lasers-- (-1989)
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON IONS
CHARGED PARTICLES
CURRENTS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ENERGY-LEVEL TRANSITIONS
EXCITATION
IONS
LASERS
OPTICAL PUMPING
POPULATION INVERSION
PUMPING
WAVE PROPAGATION
420300 -- Engineering-- Lasers-- (-1989)
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON IONS
CHARGED PARTICLES
CURRENTS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ENERGY-LEVEL TRANSITIONS
EXCITATION
IONS
LASERS
OPTICAL PUMPING
POPULATION INVERSION
PUMPING
WAVE PROPAGATION