BIC lasing from first principles
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866918128382902272 |
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| author | Ochiai, Tetsuyuki |
| author_facet | Ochiai, Tetsuyuki |
| contents | One of the main applications of the bound state in the continuum (BIC) is the low-threshold lasing. Ideally, the infinite quality factor of the BIC results in the zero-threshold and zero-linewidth lasing. However, various effects disturb the infinite quality factor. Instead, we have a dense distribution of eigenmodes around a target frequency of ideal systems, giving rise to a complex mode selection under finite pumping. We here study how the lasing modes are selected in finite photonic crystals composed of dielectric spheres with gain media. We employ a semi-classical approach, the so-called steady-state ab-initio laser theory combined with the multiple-scattering method. The theory predicts that the BIC certainly results in the low-threshold lasing in the finite systems. Moreover, the localfield enhancement of the BIC stabilizes the single-mode lasing far beyond the higher lasing threshold in the noninteracting limit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_15433 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | BIC lasing from first principles Ochiai, Tetsuyuki Optics One of the main applications of the bound state in the continuum (BIC) is the low-threshold lasing. Ideally, the infinite quality factor of the BIC results in the zero-threshold and zero-linewidth lasing. However, various effects disturb the infinite quality factor. Instead, we have a dense distribution of eigenmodes around a target frequency of ideal systems, giving rise to a complex mode selection under finite pumping. We here study how the lasing modes are selected in finite photonic crystals composed of dielectric spheres with gain media. We employ a semi-classical approach, the so-called steady-state ab-initio laser theory combined with the multiple-scattering method. The theory predicts that the BIC certainly results in the low-threshold lasing in the finite systems. Moreover, the localfield enhancement of the BIC stabilizes the single-mode lasing far beyond the higher lasing threshold in the noninteracting limit. |
| title | BIC lasing from first principles |
| topic | Optics |
| url | https://arxiv.org/abs/2508.15433 |