Malus Law Apparatus

Holmarc's Malus Law Apparatus (Model No: HO-ED-P-02) helps to understand polarization properties of light. It can also be used to study the light intensity relation of polarizer-analyzer. This apparatus comprises of a diode laser (as a light source), a polarizer, an analyzer assembly and a pinhole photo detector with output measurement unit.

In this experiment, Malus law of polarization is verified by showing that the intensity of light passed through two polarizers depend on the square of cosine value of the angle between the two polarizer axis. Laser light is used in this experiment because it’s wavelength is almost completely extinguished by the crossed polarizers.

The laser beam travelling through a polarizer is observed as a function of the orientation of the polarizer. With a second polarizer (called analyzer) the relative orientation of the polarizers is determined. The transmitted light is measured by a photo detector and the Malus Law can be verified.

Experiment:

   To measure the light intensity of plane polarized light as a function of the analyzer position

Fig. Intensity Vs Polarization Angle

Features:

Holders with adjustable height and compatible in optical rail

Graduated circular degree scale of analyzer and polarizer from 0 to 360°

All components are made out of anodized aluminum and stainless steel to avoid corrosion

 Graphs:

 

Video:

Click HERE for Video - 

Related Topics:

Polarization by reflection

Malus' Law

Polarizer

Analyzer

Scope of Delivery:

Optical Rail

Kinematic Laser Mount

Polarizer Rotator with Mount

Detector Mount

Diode Laser with Power supply (Red)

Detector Output Measurement Unit

Accessories

Instruction Manual