Contact charge-transfer lasers
A mechanism for sustaining population inversions in contact charge-transfer complexes in which the ground electronic state is not bound is described. The mechanism relies on picosecond radiationless depletion of the lower laser state. This generates an inversion even when the ground-state potential curve, as plotted against the donor-acceptor distance, is not repulsive vertically below the excited state minimum. Contact charge-transfer lasers would offer high gain, high-energy density, and tunable sources of coherent radiation in the uv and visible. A method for pumping such a laser is examined and applied to the pyrrole-oxygen complex. A rate equation analysis is done and estimates for gain and energy density are presented.
- Research Organization:
- Department of Electrical Engineering, Old Dominion University, Norfolk, Virginia 23508
- OSTI ID:
- 6156112
- Journal Information:
- J. Appl. Phys.; (United States), Vol. 52:7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LASERS
CHARGE EXCHANGE
COHERENT RADIATION
ENERGY DENSITY
GAIN
GROUND STATES
MATHEMATICAL MODELS
OXYGEN
POPULATION INVERSION
PYRROLES
THEORETICAL DATA
TUNING
ULTRAVIOLET RADIATION
VISIBLE RADIATION
AMPLIFICATION
AZOLES
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
HETEROCYCLIC COMPOUNDS
INFORMATION
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RADIATIONS
420300* - Engineering- Lasers- (-1989)