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arXiv · 1508.05349

Threshold Characteristics of Slow-Light Photonic Crystal Lasers

Weiqi Xue·Yi Yu·Luisa Ottaviano·Yaohui Chen·Elizaveta Semenova·Kresten Yvind·Jesper Mork
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Abstract

The threshold properties of photonic crystal quantum dot lasers operating in the slow-light regime are investigated experimentally and theoretically. Measurements show that, in contrast to conventional lasers, the threshold gain attains a minimum value for a specific cavity length. The experimental results are explained by an analytical theory for the laser threshold that takes into account the effects of slow-light and random disorder due to unavoidable fabrication imperfections. Longer lasers are found to operate deeper into the slow-light region, leading to a trade-off between slow-light induced reduction of the mirror loss and slow-light enhancement of disorder-induced losses.

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Weiqi Xue, Yi Yu, Luisa Ottaviano, Yaohui Chen, Elizaveta Semenova, Kresten Yvind, Jesper Mork. 2015-08-21. Threshold Characteristics of Slow-Light Photonic Crystal Lasers. https://doi.org/10.1103/physrevlett.116.063901

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