Deeply Subwavelength Blue-Range Nanolaser
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
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2025
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| _version_ | 1866916952183668736 |
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| author | Khemelevskaia, Daria Solodovchenko, Nikolai Sapozhnikova, Elizaveta Chestnov, Igor Dmitriev, Alexey Shahnazaryan, Vanik Baranov, Denis Makarov, Sergey |
| author_facet | Khemelevskaia, Daria Solodovchenko, Nikolai Sapozhnikova, Elizaveta Chestnov, Igor Dmitriev, Alexey Shahnazaryan, Vanik Baranov, Denis Makarov, Sergey |
| contents | Modern high-definition display and augmented reality technologies require the development of ultracompact micro- and nano-pixels with colors covering the full gamut and high brightness. In this regard, lasing nano-pixels emitting light in the spectral range 400-700 nm are highly demanded. Despite progress in red, green, and ultraviolet nanolasers, the demonstrated blue-range (400-500 nm) single-particle-based lasers are still not subwavelength yet. Here we fabricate CsPbCl$_3$ cubic-shaped single-crystal nanolasers on a silver substrate by wet chemistry synthesis, producing their size range around 100-500 nm, where the nanoparticle with sizes 0.145$μ$m$\times$0.195$μ$m$\times$0.19$μ$m and volume 0.005 $μ$m$^3$ (i.e. $\simλ^3$/13) is the smallest nanolaser among the lasers operating in the blue range reported so far, with emission wavelength around $λ\approx 415$ nm. Experimental results at a temperature of 80 K and theoretical modeling show that the CsPbCl$_3$ nanolaser is a polaritonic laser where exciton-polaritons are strongly coupled with Mie resonances enhanced by the metallic substrate. As a result, the combination of the strong excitonic response of CsPbCl$_3$ materials, its high crystalline quality, and optimized optical resonant properties resulting in a population-inversion-free lasing regime are the key factors making the proposed nanolaser design superior among previously reported ones in the blue spectral range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_13062 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Deeply Subwavelength Blue-Range Nanolaser Khemelevskaia, Daria Solodovchenko, Nikolai Sapozhnikova, Elizaveta Chestnov, Igor Dmitriev, Alexey Shahnazaryan, Vanik Baranov, Denis Makarov, Sergey Optics Modern high-definition display and augmented reality technologies require the development of ultracompact micro- and nano-pixels with colors covering the full gamut and high brightness. In this regard, lasing nano-pixels emitting light in the spectral range 400-700 nm are highly demanded. Despite progress in red, green, and ultraviolet nanolasers, the demonstrated blue-range (400-500 nm) single-particle-based lasers are still not subwavelength yet. Here we fabricate CsPbCl$_3$ cubic-shaped single-crystal nanolasers on a silver substrate by wet chemistry synthesis, producing their size range around 100-500 nm, where the nanoparticle with sizes 0.145$μ$m$\times$0.195$μ$m$\times$0.19$μ$m and volume 0.005 $μ$m$^3$ (i.e. $\simλ^3$/13) is the smallest nanolaser among the lasers operating in the blue range reported so far, with emission wavelength around $λ\approx 415$ nm. Experimental results at a temperature of 80 K and theoretical modeling show that the CsPbCl$_3$ nanolaser is a polaritonic laser where exciton-polaritons are strongly coupled with Mie resonances enhanced by the metallic substrate. As a result, the combination of the strong excitonic response of CsPbCl$_3$ materials, its high crystalline quality, and optimized optical resonant properties resulting in a population-inversion-free lasing regime are the key factors making the proposed nanolaser design superior among previously reported ones in the blue spectral range. |
| title | Deeply Subwavelength Blue-Range Nanolaser |
| topic | Optics |
| url | https://arxiv.org/abs/2509.13062 |