Bare Aluminum (BAL)
Bare Aluminum offers greater than 86% reflectance from near UV to mid IR. Aluminum will slowly oxidize, resulting in a significant loss of reflectance in the UV, and slight scattering throughout the spectrum. Therefore, it is best if aluminum has a protective dielectric overcoat. A protective overcoat will also substantially improve abrasion resistance, so that the coating is less susceptible to damage during cleaning and handling.
RMI STANDARD SPECIFICATIONS
|
λ (µm)
0.22
0.26
0.30
0.34
0.38
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85 |
% R, BAL
91.5
92.2
92.3
92.5
92.5
92.4
92.2
91.8
91.5
91.1
90.5
89.7
88.6
86.7
86.7 |
λ (µm)
0.90
0.95
1.00
1.50
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.0
15.0
20.0 |
% R, BAL
89.1
92.4
94.0
97.4
97.8
98.0
98.2
98.4
98.5
98.6
98.7
98.7
98.7
98.7
98.7 |
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