Abstract
In this work, we report on a new way to control the propagation of an image via a non-material lens in a rubidium vapor cell. We experimentally demonstrate that a strong control beam with Gaussian mode can be used to change the refractive index at probe frequency in a lambda-type configuration with large single-photon detuning. By this way, we can easily make the image imprinted on the weak probe beam enlarged or shrunken. At the same time, the shape of the image is preserved without obvious change.
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