Contact charge-transfer lasers
Abstract
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.
- Authors:
- Publication Date:
- Research Org.:
- Department of Electrical Engineering, Old Dominion University, Norfolk, Virginia 23508
- OSTI Identifier:
- 6156112
- Resource Type:
- Journal Article
- Journal Name:
- J. Appl. Phys.; (United States)
- Additional Journal Information:
- Journal Volume: 52:7
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 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)
Citation Formats
Dharamsi, A N, and Tulip, J. Contact charge-transfer lasers. United States: N. p., 1981.
Web. doi:10.1063/1.329355.
Dharamsi, A N, & Tulip, J. Contact charge-transfer lasers. United States. https://doi.org/10.1063/1.329355
Dharamsi, A N, and Tulip, J. 1981.
"Contact charge-transfer lasers". United States. https://doi.org/10.1063/1.329355.
@article{osti_6156112,
title = {Contact charge-transfer lasers},
author = {Dharamsi, A N and Tulip, J},
abstractNote = {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.},
doi = {10.1063/1.329355},
url = {https://www.osti.gov/biblio/6156112},
journal = {J. Appl. Phys.; (United States)},
number = ,
volume = 52:7,
place = {United States},
year = {Wed Jul 01 00:00:00 EDT 1981},
month = {Wed Jul 01 00:00:00 EDT 1981}
}
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