Room-Temperature Lasing in a Low-Loss Tamm Plasmon Cavity,ACS Photonics

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Room-Temperature Lasing in a Low-Loss Tamm Plasmon Cavity
ACS Photonics ( IF 6.5 ) Pub Date : 2020-10-29 , DOI: 10.1021/acsphotonics.0c00781
Vincent Toanen ₁ , Clémentine Symonds ₁ , Jean-Michel Benoit ₁ , Alban Gassenq ₁ , Aristide Lemaı̂tre ₂ , Joel Bellessa ₁

Affiliation

Optical Tamm structures offer great possibilities for the development of new optoelectronic devices ranging from polarized laser sources to plasmon generators. Indeed, thanks to the patterning of a thin metallic film alone, microscale confinement of light is achieved, which constitutes a very easy and flexible way to make confined lasers. Here, we report on room-temperature lasing of a Tamm structure, based on an original geometry with enhanced quality factor. In this so-called Super Tamm structure, a low-index dielectric layer is inserted between a silver film and an AlGaAs/AlAs distributed Bragg reflector while keeping the mode confinement at the metallic/dielectric interface. Numerical simulations of this structure show Q-factors up to 6500. Room-temperature lasing is achieved with this new architecture, as demonstrated by the nonlinear emission intensity increase and the spectral and emission-diagram narrowing. This result is a determinant step toward the realization of useful Tamm laser devices.

中文翻译：

低损耗Tamm等离子腔中的室温激光

光学Tamm结构为开发新型光电设备提供了巨大的可能性，从偏振激光源到等离子体激元发生器，这些光电设备都可以使用。的确，由于仅对金属薄膜进行构图，就实现了光的微缩限制，这构成了制造受限激光器的非常容易且灵活的方法。在这里，我们报告了Tamm结构的室温激光激射，它基于具有增强质量因数的原始几何形状。在这种所谓的Super Tamm结构中，将低折射率介电层插入银膜和AlGaAs / AlAs分布的布拉格反射器之间，同时将模式限制在金属/介电界面处。此结构的数值模拟显示Q最大发射因子可达6500。采用这种新架构可实现室温激射，非线性发射强度的增加以及光谱和发射图的变窄证明了这一点。这个结果是实现有用的Tamm激光设备的决定性一步。

更新日期：2020-11-18

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