Achieving the impossible? Holograms written by light from two separate lasers
Physics Education, 29, (3), . (doi:10.1088/0031-9120/29/3/005).
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Interference effects are easily observed using lasers. Their good coherence properties, high intensity and directionality make them ideal for laboratory demonstrations such as Young's slits. What happens if you attempt interference between two separate lasers, however? A static interference pattern is most improbable, but there are ways that this can occur, using photorefractive crystalline materials.
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