Spatiotemporal imaging of nonlinear optics in van der Waals waveguides
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866916566604447744 |
|---|---|
| author | Xu, Ding Peng, Zhi Hao Trovatello, Chiara Cheng, Shan-Wen Xu, Xinyi Sternbach, Aaron Basov, Dmitri N. Schuck, P. James Delor, Milan |
| author_facet | Xu, Ding Peng, Zhi Hao Trovatello, Chiara Cheng, Shan-Wen Xu, Xinyi Sternbach, Aaron Basov, Dmitri N. Schuck, P. James Delor, Milan |
| contents | Van der Waals (vdW) semiconductors have emerged as promising platforms for efficient nonlinear optical conversion, including harmonic and entangled photon generation. Although major efforts are devoted to integrating vdW materials in nanoscale waveguides for miniaturization, the realization of efficient, phase-matched conversion in these platforms remains challenging. To address this challenge, we develop a far-field ultrafast imaging method to track the propagation of both fundamental and harmonic waves within vdW waveguides with extreme spatiotemporal resolution. Our approach allows systematic optimization of nonlinear conversion by determining the phase-matching angles, mode profiles, and losses in waveguides without a priori knowledge of material properties. We focus on light propagation in slab waveguides of rhombohedral-stacked MoS2, an emerging vdW semiconductor with giant nonlinear susceptibility. Our results reveal that these waveguides support birefringent phase-matching, demonstrating the material's potential for efficient on-chip nonlinear optics. This work establishes spatiotemporal imaging of light propagation in waveguides as an incisive and general method to identify new materials and architectures for efficient nonlinear nanophotonics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_07640 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spatiotemporal imaging of nonlinear optics in van der Waals waveguides Xu, Ding Peng, Zhi Hao Trovatello, Chiara Cheng, Shan-Wen Xu, Xinyi Sternbach, Aaron Basov, Dmitri N. Schuck, P. James Delor, Milan Materials Science Optics Van der Waals (vdW) semiconductors have emerged as promising platforms for efficient nonlinear optical conversion, including harmonic and entangled photon generation. Although major efforts are devoted to integrating vdW materials in nanoscale waveguides for miniaturization, the realization of efficient, phase-matched conversion in these platforms remains challenging. To address this challenge, we develop a far-field ultrafast imaging method to track the propagation of both fundamental and harmonic waves within vdW waveguides with extreme spatiotemporal resolution. Our approach allows systematic optimization of nonlinear conversion by determining the phase-matching angles, mode profiles, and losses in waveguides without a priori knowledge of material properties. We focus on light propagation in slab waveguides of rhombohedral-stacked MoS2, an emerging vdW semiconductor with giant nonlinear susceptibility. Our results reveal that these waveguides support birefringent phase-matching, demonstrating the material's potential for efficient on-chip nonlinear optics. This work establishes spatiotemporal imaging of light propagation in waveguides as an incisive and general method to identify new materials and architectures for efficient nonlinear nanophotonics. |
| title | Spatiotemporal imaging of nonlinear optics in van der Waals waveguides |
| topic | Materials Science Optics |
| url | https://arxiv.org/abs/2412.07640 |