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Home > Products > Windows > H-K9L(N-BK7) Windows
1064nm YAG Laser BK7 Windows
The optical properties (refractive index, Abbe number) of BK7 and K9 are almost the same, and they can replace each other in the visible wavelength. 1064nm is the working wavelength of YAG laser, and all kinds of 1064nm coated optics are needed for YAG lasers.
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BK7与K9的光学性能对比 Optical performance comparison of BK7 and K9 |
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材料 Material |
BK7 | K9 |
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折射率 (nd) |
1.5168 (@587.6nm) | 1.5163 (@587.6nm) |
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阿贝数 (vd) |
64.2 | 64.1 |
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透光范围 Transmittance range |
350nm - 2.0μm | 350nm - 2.0μm |
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透过率 Transmittance |
>90% (可见光范围) | >90% (可见光范围) |
What are the uses of the laser BK7 (K9) window?
The laser BK7 (K9) window can be used as a laser cavity, a sealed window for the laser or a beam-transmitting element.
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