Notes
- Divergence angle measured with collimated laser, 633 nm.
 Exact angles may vary slightly depending on operating wavelength
 or source collimation.
- Diffuser surface typically faces the source.
- Larger input beam size typically improves flat-top uniformity of
 intensity profile.
- When used with coherent sources the diffuser produces speckle.
- Handling and cleaning: always use gloves when handling diffuser; avoid
 touching diffuser surface; blow dry compressed air, or nitrogen, to
 remove particles. Do not use tweezers.
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