Directional lasing in resonant semiconductor nanoantenna arrays
Son Tung Ha,Yuan Hsing Fu,Naresh Kumar Emani,Naresh Kumar Emani,Zhenying Pan,Reuben M. Bakker,Ramón Paniagua-Domínguez,Arseniy I. Kuznetsov +7 more
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TL;DR: In this paper, the authors demonstrate directional lasing, with a low threshold and high quality factor, in active dielectric nanoantenna arrays achieved through a leaky resonance excited in coupled gallium arsenide (GaAs) nanopillars.
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Abstract: High-index dielectric and semiconductor nanoparticles supporting strong electric and magnetic resonances have drawn significant attention in recent years. However, until now, there have been no experimental reports of lasing action from such nanostructures. Here, we demonstrate directional lasing, with a low threshold and high quality factor, in active dielectric nanoantenna arrays achieved through a leaky resonance excited in coupled gallium arsenide (GaAs) nanopillars. The leaky resonance is formed by partially breaking a bound state in the continuum generated by the collective, vertical electric dipole resonances excited in the nanopillars for subdiffractive arrays. We control the directionality of the emitted light while maintaining a high quality factor (Q = 2,750). The lasing directivity and wavelength can be tuned via the nanoantenna array geometry and by modifying the gain spectrum of GaAs with temperature. The obtained results provide guidelines for achieving surface-emitting laser devices based on active dielectric nanoantennas that are compact and highly transparent.
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Citations
Ultrahigh-Q guided mode resonances in an All-dielectric metasurface
Lujun Huang,Rong Jin,Chaobiao Zhou,Guanhai Li,Lei Xu,Adam C. Overvig,Fu Deng,Xiaoshuang Chen,Wei Lu,Andrea Alù,Andrey E. Miroshnichenko +10 more
TL;DR: In this paper , a patterned perturbation layer on top of a multilayer waveguide system was proposed to enable ultrahigh-Q guided-mode resonators by adding a low-index layer on a 220 nm silicon on insulator substrate.
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Active meta-optics and nanophotonics with halide perovskites
Alexander S. Berestennikov,Pavel M. Voroshilov,Sergey V. Makarov,Yuri S. Kivshar,Yuri S. Kivshar +4 more
TL;DR: In this paper, the authors review the recent progress in the field of halide-perovskite meta-optics with the central focus on light-emitting nanoantennas and metasurfaces for the emerging field of active metadevices.
Coupled-wave formalism for bound states in the continuum in guided-mode resonant gratings
TL;DR: In this article, the formation of bound states in the continuum (BICs) in one-dimensional periodic guided-mode resonant gratings consisting of a slab waveguide layer with a binary grating attached to one or both of its interfaces was studied.
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Highly Controllable Etchless Perovskite Microlasers Based on Bound States in the Continuum.
Yuhan Wang,Yubin Fan,Xudong Zhang,Haijun Tang,Qinghai Song,Qinghai Song,Jiecai Han,Shumin Xiao,Shumin Xiao +8 more
TL;DR: By patterning a one-dimensional polymer grating onto a perovskite film, the symmetry-protected bound states in the continuum (BICs) can be formed in it as mentioned in this paper.
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