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Polarisation by quarterwave plates
Principle: Monochromatic light falls on a mica plate perpendicular to its optic axis. At the appropriate plate thickness (λ/4, or quarter-wave plate) there is a 90° phase shift between the ordinary and the extraordinary ray when the light emerges from the crystal. The polarisation of the emergent light is investigated at different angles between the optic axis of the λ/4 plate and the direction of polarisation of the incident light.
Tasks:
1. To measure the intensity of planepolarised light as a function of the position of the analyser.
2. To measure the light intensity behind the analyser as a function of the angle between the optic axis of the λ/4 plate and that of the analyser.
3. To perform experiment 2. with two λ/4 plates one behind the other.
| Artikel-Nr. | Artikelbezeichnung |
|---|---|
| P2250100 | Polarisation by quarterwave plates |
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