Single mode lasing in transversely multi-moded PT-symmetric microring resonators

Hoseein Hodaei; Mohammad-Ali Miri; Absar U. Hassan; William E. Hayenga; Matthias Heinrich; Demetrios N. Christodoulides; Mercedeh Khajavikhan

arXiv · 1604.06424

Single mode lasing in transversely multi-moded PT-symmetric microring resonators

Hoseein Hodaei·Mohammad-Ali Miri·Absar U. Hassan·William E. Hayenga·Matthias Heinrich·Demetrios N. Christodoulides·Mercedeh Khajavikhan

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Abstract

Single mode lasing is experimentally demonstrated in a transversely multi-moded InP-based semiconductor microring arrangement. In this system, mode discrimination is attained by judiciously utilizing the exceptional points in a parity-time (PT) symmetric double microring configuration. The proposed scheme is versatile, robust to small fabrication errors, and enables the device to operate in a stable manner considerably above threshold while maintaining spatial and spectral purity. The results presented here pave the way towards a new class of chip-scale semiconductor lasers that utilize gain/loss contrast as a primary mechanism for mode selection.

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Hoseein Hodaei, Mohammad-Ali Miri, Absar U. Hassan, William E. Hayenga, Matthias Heinrich, Demetrios N. Christodoulides, Mercedeh Khajavikhan. 2016-04-21. Single mode lasing in transversely multi-moded PT-symmetric microring resonators. https://arxiv.org/abs/1604.06424

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