Table 1.
Summary of experimentally obtained Q-factors in metasurfaces.
| Mechanism | Q | λ (nm) | Material | Light source | Array size (μm2) | Reference |
|---|---|---|---|---|---|---|
| SLR | 2340 | 1550 | Au NPs | Supercontinuum | 600 × 600 | This work |
| LSPR | <10 | 700 | Au NPs | Tungs.-halogen lamp | 3000 × 3000 | 61 |
| SLR | 25 | 930 | Au NPs | Collimated source | 135 × 135 | 27 |
| SLR | 30 | 850 | Au NPs | Tungs.-halogen lamp | 3000 × 3000 | 61 |
| SLR | 40–60 | 600 | Au NPs | Ellipsometer | 200 × 200 | 28 |
| SLR | 60 | 800 | Au NPs | Tungs.-halogen lamp | 35 × 35 | 26 |
| SLR | 150 | 764 | Au NPs | Tungs.-halogen lamp | N/A | 62 |
| SLR | 230 | 900 | Au NPs | Tungs.-halogen lamp | ~10,000 × 10,000 | 63 |
| SLR | 300 | 1500 | Au nanostripes | Tungs.-halogen lamp | 300 × 100 | 40 |
| SLR | 330 | 648 | Ag NPs | Tungs.-halogen lamp | 2500 × 2500 | 37 |
| SLR | 430 | 860 | Au NPs | Tungs.-halogen lamp | 1000 × 1000 | 34 |
| Mirror image | 200 | 5000 | ITO nanorods | Collimated source | N/A | 35 |
| EIT | 483 | 1380 | Si | Tungs.-halogen lamp | 225 × 240 | 64 |
| Fano resonance | 65 | THz | Al particles | THz laser | 10,000 × 10,000 | 65 |
| Fano resonance | 100 | THz | Au Assym. NPs | FTIR | 150 × 150 | 66 |
| Fano resonance | 350 | 1000 | Si | N/A | N/A | 67 |
| Fano resonance | 600 | 1000 | GaAs | N/A | N/A | 67 |
| BIC | 2750 | 825 | GaAs | Laser | 60 × 108 | 68 |
| Quasi-BIC | 18,511 | 1588.4 | Si | Laser | 15 × 15 | 69 |
The results presented in this work are in bold.
Q quality factor, λ resonance wavelength, NP nanoparticle, SLR surface lattice resonance, LSPR localized surface plasmon resonance, EIT electromagnetically induced transparency, BIC bound state in the continuum.