Author(s): Theodore P. Letsou, Dmitry Kazakov, Pawan Ratra, Lorenzo L. Columbo, Massimo Brambilla, Franco Prati, Cristina Rimoldi, Sandro Dal Cin, Nikola Opačak, Henry O. Everitt, Marco Piccardo, Benedikt Schwarz, and Federico Capasso
An experiment demonstrates that a chip-scale coupled laser system consisting of a pair of coupled semiconductor ring lasers can exhibit complex optical states impossible to achieve in a single waveguide laser.
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