Faraday Effect with He-Ne Laser

If a transparent isotropic material is placed in a strong magnetic field and linearly polarized light is transmitted in the direction of the magnetic field, the plane of polarization of linearly polarized light rotates by an angle.

Features:

• All electrical connections are made using 4mm safety plugs & sockets.
• Compact & portable electromagnet.
• High current DC power supply with safety features like short circuit protection, over heat protection etc.
• Saddle can hold rod from 8 to 15mm.
• Heavy, rigid and stable Triangular Optical bench (made of Al extrusion).
• Height and level adjustment screws (made of SS)
• Analyser/Polarizer with 0 ± 90° graduation.
• He-Ne laser with built-in power supply.

Objectives:

• Observing the rotation of the polarization plane when polarized monochromatic light passes through flint glass under influence of a magnetic field.
• Determining Verdet’s constant from the relation between rotation angle and magnetic flux.

Technical Data:

• Flint Glass : DEDF glass, size 15x15x15mm
• DC Power supply : 0-30V DC, 10A, 3½ Display LED
• Digital Gauss meter : Range 2KG & 20 KG, Resolution 1G & 10G, Sensor In As
• Electromagnet coil : 500 Turns coil, 7Amp (Max.)
• Electromagnet Core : Ferromagnetic, 40x40mm cross section,
• Optical bench : Al exclusion, L=1 mtr., Triangular shape with end stop, 4 SS levelling screw
• Transversal slider : Al, 25 – 0 – 25mm, LC 0.01mm
• Fixed slider : Al, Base width 50mm, Height 115mm
• Laser : He-Ne Laser (632mm), Power 2 mW, Beam spot 2.5mm, current 4mA ~ 6mA, size 300 x 62 x 82mm

Scope of Delivery:

• 1 Flint glass with Holder
• 1 Electromagnet unit with slider
• 1 Pair of Polarizer / Analyzer
• 1 Object screen
• 1 Optical bench, 1 m
• 4 Fixed slider
• 1 Long width slider
• 1 Power supply (0-30V DC,10A)
• 1 Digital gauss meter with probe
• 1 Hall probe holder
• 1 Convex lens (F=10cm)
• 2 Plug lead 100 cm, Black
• 1 Plug lead 100 cm, Red
• 1 Plug lead 50 cm, Yellow
• 1 He-Ne laser

Key Topics:

• Opto-Magneto effect
• Birefringent
• Flint Glass
• Polarization of light
• Verdet’s constant
• Electromagnetism.
• Plane of polarization