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arXiv · 2607.15783

Electromagnetically induced transparency lasing in distributed resonant feedback system

Yaoyao Liang·Xinyue Wang·Hongyi Tian·Yulong Fan·Qi Qin·Feihu Wang
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Abstract

We demonstrate a loss-enabled mechanism that can realize single electromagnetically induced transparency (EIT) analogue in periodic waveguide-resonator structures. Unlike previously reported passband-based EIT analogues, which arise from compressed passbands in the intrinsic-loss-free limit, the proposed mechanism exploits resonator intrinsic loss to generate an isolated transparency mode within the original bandgap. The resulting EIT state remains immune to finite-size mode discretization, enabling robust single-frequency lasing through distributed resonant feedback while requiring a threshold modal gain lower than that of an equally long Fabry-Perot laser. Our findings extend classical EIT analogues from passive spectral phenomena to active laser operation.

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Yaoyao Liang, Xinyue Wang, Hongyi Tian, Yulong Fan, Qi Qin, Feihu Wang. 2026-07-17. Electromagnetically induced transparency lasing in distributed resonant feedback system. https://arxiv.org/abs/2607.15783

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