6 Light and Optics 6.4 Polarization
Polarisation through quarter-wave plates with optical base plate
P2250105
Intensity distribution of polarised light for different angles of the /4 plate, as a function of the analyser position.
Principle Monochromatic light impinges on amica plate, perpenicularly to its optical axis. If the thickness of the plate is adequate (lambda/4 plate), a phase shift of 90° occurs between the ordinary and the extraordinary beam when the latter leaves the crystal.The polarisation of exiting light is examined for different angles between the optical axis of the lambda/4 plate and the direction of polarisation of incident light. Tasks 1. Measurement of the intensity of linearly polarised light as a function of the analyser's position (Malus' law) 2. Measurement of the light intensity behind the analyser as a function of the angle between the optical axis of the lambda/4 plate and the analyser. 3. Carrying out experiment (2) with two succesive lambda/4 plates. What you can learn about ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪
Photoelement f. opt. base plt. Diaphragm holder f.opt.base plt. Polarizing filter f.opt.base pl. Voltmeter,0.3-300VDC,10-300VAC / Adjusting support 35 x 35 mm Polarization specimen, mica
08734-00 08724-00 08730-00 07035-00 08711-00 08664-00
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Related Experiments Polarisation through quarter-wave plates with optical profile bench P2250100 Polarimetry P2250200
Linearly, circularly an elliptically polarised light Polarizer Analyser Malus' law Plane of polarisation Double refraction Optical axis Ordinary and extraordinary beam
Main articles He/Ne Laser, 5mW with holder Power supply for laser head 5 mW Universal measuring amplifier Optical base plate with rubberfeet
08701-00 08702-93 13626-93 08700-00
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