Counterintuitive versus regular inversionless gain in a coherently prepared ladder scheme |
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Authors: | Braunstein D Smolik E Koganov G A Biton Y Shuker R |
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Institution: | 1.Physics Department, Shammon College of Engineering, P. O. Box 45, Beer sheva, 84100, Israel ;2.Physics Department, Ben Gurion University of the Negev, P. O. Box 653, Beer sheva, 84105, Israel ;3.Eilat Campus, Ben Gurion University of the Negev, Hatmarim Blv, Eilat, 88000, Israel ; |
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Abstract: | In this research we study lasing without population inversion from a three-level atom interacting with two laser fields, in
the ladder or cascade scheme. We investigate counterintuitive sequencing as well as regular sequencing of the time of laser
fields application. In a counterintuitive sequence scheme a short probe pulse is introduced prior to the application of the
coupling field, in contrast, to a standard sequence scheme, where both fields are introduced at the same time. The influence
of varying the probe pulse width and time delay between the initiation of probe and coupling fields on transient probe gain
is investigated. The calculations indicate the potential of producing gain without inversion via counterintuitive sequence
scheme. |
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