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Table 2
List of the passbands, with their respective structure and their spectral range in this study.
| Letter Code | Channel structure | Spectral range (nm) |
|---|---|---|
| Al | Al2O3/Al – Diamond | 17–80 |
| cBN MSM | cBN – MSM architecture | 1–193 |
| cBN PIN | cBN – PIN architecture | 130–193 |
| AlGaN 1 | AlN/AlxGa1-xN | 210–230 |
| AlGaN 2 | Alx’Ga1-x’N/Aly’Ga1-y’N | 250–280 |
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