Bhanu Prasad, G. ; Agarwal, G. S. (1991) Light amplification by coherence effects - a double resonance model for lasers without inversion Optics Communications, 86 (5). pp. 409-415. ISSN 0030-4018
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0030-4018(91)90505-8
Abstract
We consider a ladder system in which the two excited levels are coupled by a coherent drive. We show that this coupling can lead to gain regions for the laser transition even if the incoherent pumping of the middle level is such that there is no population inversion. We analyse in detail the origin of gain in such a ladder system.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 78903 |
| Deposited On: | 23 Jan 2012 11:34 |
| Last Modified: | 23 Jan 2012 11:34 |
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