TY - JOUR
T1 - Enhanced index of refraction
T2 - a comparison between two- and three-level systems
AU - Wilson-Gordon, A. D.
AU - Friedmann, H.
PY - 1992/11/15
Y1 - 1992/11/15
N2 - We show that the phenomena of enhancement of the refractive index and third-order susceptibility at a point of vanishing absorption, recently described is multilevel systems, are also present in two-level systems interacting with a strong pump and a weak to moderately strong probe laser. In addition we show that in the three-level system discussed by Scully and Zhu, the refractive index can be enhanced even when the probe is of comparable intensity to the pump. In both systems, the effects can be increased by detuning the pump.
AB - We show that the phenomena of enhancement of the refractive index and third-order susceptibility at a point of vanishing absorption, recently described is multilevel systems, are also present in two-level systems interacting with a strong pump and a weak to moderately strong probe laser. In addition we show that in the three-level system discussed by Scully and Zhu, the refractive index can be enhanced even when the probe is of comparable intensity to the pump. In both systems, the effects can be increased by detuning the pump.
UR - http://www.scopus.com/inward/record.url?scp=0026946710&partnerID=8YFLogxK
U2 - 10.1016/0030-4018(92)90020-r
DO - 10.1016/0030-4018(92)90020-r
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AN - SCOPUS:0026946710
SN - 0030-4018
VL - 94
SP - 238
EP - 244
JO - Optics Communications
JF - Optics Communications
IS - 4
ER -