Which consequence results when birefringent material is improperly aligned?

💡 Explanation

Improper alignment leads to varying polarization rotations, and therefore output polarization drifts occur, because the relative phase retardance inaccurately acts across the beam section, rather than a uniform shift. Therefore, polarization stability decreases rather than shifting the optical axis due to stress or index variations.

• Which consequence results when a catalyst bed suffers poisoning?
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