Abstract
For two decades, microcavities have been widely studied due to their numerous applications, from microlasers on chip [1] to biological or chemical sensing [2]. One of the main concerns is the control of the light propagation inside the resonator and its emission in one or several selected directions. Here, we focus on the square microlaser because it emits very narrow emission lobes [3], and we report a new mechanism to dynamically suppress or enhance some of these lobes by means of the polarization of the pump beam. This method is based on the control of the coherent superposition of degenerate modes belonging to different symmetry classes. This generic concept can be further extended to other cavity shapes.
© 2017 IEEE
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