The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Laser Oscillation without Population Inversion in a Sodium Atomic Beam
Abstract
Continuous wave (cw) amplification and laser oscillation without population inversion have been observed for the first time in a $\ensuremath{\Lambda}$ scheme within the sodium ${D}_{1}$ line. This is also the first demonstration in which the lasing medium was an atomic beam; this is an approach which, in addition to elucidating the physics, lays a foundation for extensions into the ultraviolet. Calculations using realistic atomic structure were critical to the choice of experimental approach. Observations agree with full density-matrix calculations and clearly show there was no population inversion.
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Citations
Cites
Observation of electromagnetically induced transparency
Boller, K.-J., Imamoğlu, A., & Harris, S. E. (1991) · Physical Review Letters · doi:10.1103/physrevlett.66.2593 · Cited by 3,058
Nonlinear optical processes using electromagnetically induced transparency
Harris, S. E., Field, J. E., & Imamoğlu, A. (1990) · Physical Review Letters · doi:10.1103/physrevlett.64.1107 · Cited by 1,920
Lasers without inversion: Interference of lifetime-broadened resonances
Harris, S. E. (1989) · Physical Review Letters · doi:10.1103/physrevlett.62.1033 · Cited by 1,277
Alzetta, G., Gozzini, A., Moi, L., & Orriols, G. (1976) · Il Nuovo Cimento B Series 11 · doi:10.1007/bf02749417 · Cited by 1,060
Zibrov, A. S., Lukin, M. D., Nikonov, D. E., Hollberg, L., Scully, M. O., Velichansky, V. L., & Robinson, H. G. (1995) · Physical Review Letters · doi:10.1103/physrevlett.75.1499 · Cited by 539
Self-citationWhitley, R. M., & Stroud, C. R. (1976) · Physical Review A · doi:10.1103/physreva.14.1498 · Cited by 460
Lasers without inversion: interference of dressed lifetime-broadened states
Imamoǧlu, A., & Harris, S. E. (1989) · Optics Letters · doi:10.1364/ol.14.001344 · Cited by 365
Theory of a three-level gas laser amplifier
Hänsch, T., & Toschek, P. (1970) · Zeitschrift für Physik A Hadrons and nuclei · doi:10.1007/bf01394503 · Cited by 315
Lasers without inversion: A closed lifetime broadened system
Imamolu, A., Field, J. E., & Harris, S. E. (1991) · Physical Review Letters · doi:10.1103/physrevlett.66.1154 · Cited by 306
Observation of light amplification without population inversion in sodium
Gao, J., Guo, C., Guo, X., Jin, G., Wang, P., Zhao, J., Zhang, H., Jiang, Y., Wang, D., & Jiang, D. (1992) · Optics Communications · doi:10.1016/0030-4018(92)90193-u · Cited by 189
Cited by
Electromagnetically induced transparency: Optics in coherent media
Fleischhauer, M., Imamoglu, A., & Marangos, J. P. (2005) · Reviews of Modern Physics · doi:10.1103/revmodphys.77.633 · Cited by 5,189
Electromagnetically induced transparency
Marangos, J. P. (1998) · Journal of Modern Optics · doi:10.1080/09500349808231909 · Cited by 745
ACTIVE CONTROL OF THE DYNAMICS OF ATOMS AND MOLECULES
Gordon, R. J., & Rice, S. A. (1997) · Annual Review of Physical Chemistry · doi:10.1146/annurev.physchem.48.1.601 · Cited by 366
Controlling the sign of quantum interference by tunnelling from quantum wells
Faist, J., Capasso, F., Sirtori, C., West, K. W., & Pfeiffer, L. N. (1997) · Nature · doi:10.1038/37562 · Cited by 362
Metadata
- Authors
- Padmabandu, G. G., Welch, G. R., Shubin, I. N., Fry, E. S., Nikonov, D. E., Lukin, M. D., & Scully, M. O.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1996-03-18
- Volume
- 76
- Issue
- 12
- Pages
- 2053-2056
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2022957517
- Cited by
- 269
- References
- 10
- FWCI
- 18.24
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Padmabandu, G. G., Welch, G. R., Shubin, I. N., Fry, E. S., Nikonov, D. E., Lukin, M. D., & Scully, M. O. (1996). Laser Oscillation without Population Inversion in a Sodium Atomic Beam. Physical Review Letters. https://doi.org/10.1103/physrevlett.76.2053
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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