Controlling The Contrast Between Absorptivity and Emissivity in Nonreciprocal Thermal Emitters
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , |
|---|---|
| Format: | Preprint |
| Publié: |
2023
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866914655202443264 |
|---|---|
| author | Ghalekohneh, Sina Jafari Du, Changkang Zhao, Bo |
| author_facet | Ghalekohneh, Sina Jafari Du, Changkang Zhao, Bo |
| contents | Recent advancements in nonreciprocal thermal emitters challenge the conventional Kirchhoff's law, which states that emissivity and absorptivity should be equal for a given direction, frequency, and polarization. These emitters can break Kirchhoff's law and enable unprecedented thermal photon control capabilities. However, current studies mainly focus on increasing the magnitude of the contrast between emissivity and absorptivity, with little attention paid to how the sign or bandwidth of the contrast may be controlled. In this work, we show such control ability can be achieved by coupling resonances that can provide opposite contrasts between emissivity and absorptivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_08642 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Controlling The Contrast Between Absorptivity and Emissivity in Nonreciprocal Thermal Emitters Ghalekohneh, Sina Jafari Du, Changkang Zhao, Bo Optics Materials Science Recent advancements in nonreciprocal thermal emitters challenge the conventional Kirchhoff's law, which states that emissivity and absorptivity should be equal for a given direction, frequency, and polarization. These emitters can break Kirchhoff's law and enable unprecedented thermal photon control capabilities. However, current studies mainly focus on increasing the magnitude of the contrast between emissivity and absorptivity, with little attention paid to how the sign or bandwidth of the contrast may be controlled. In this work, we show such control ability can be achieved by coupling resonances that can provide opposite contrasts between emissivity and absorptivity. |
| title | Controlling The Contrast Between Absorptivity and Emissivity in Nonreciprocal Thermal Emitters |
| topic | Optics Materials Science |
| url | https://arxiv.org/abs/2311.08642 |