SK073 Polarization by Half-Wave Plate

Polarization by Half-Wave Plate A wave plate or retarder is an optical device that alters the polarization state of a light beam traveling through it. In the present setup, the diode laser light passes through polarizer to produce linearly polarized light. It then passes through the half wave plate λ/2. The λ/2 plate produces linear polarised light. For different angles of the λ/2 plate with respect to optic axis only the polarisation plane changes. The maximum and minimum are not changed which can be investigated with the analyser over the range -90 to +90 degrees. Features: Class I diode laser with output power 0.4 - 0.8 mV Saddle can hold rod from 8 to 15mm. Precise measurement using Data logger & light sensor with Graph analyser software Heavy, rigid and stable Triangular Optical bench (made of Al extrusion) Height and level adjustment screws (made of SS) Data logger can collect 1,00,000 samples per sec. Learning Objectives/experiments To measure the light intensity of plane polarised light as a function of the analyzer position. To study the polarization of light by half wave plate Produce plane polarised light using half wave plate Technical Data: Light sensor : Range 0 - 600 Lx, resolution 0.15 Lx Range 0 - 6000 Lx,resolution 1.5 Lx Range 0 - 150K Lx, resolution 37 Lx Accuracy : + 4% over entire range Dataloger : Up to 100K SPS, Transmission : from 0 to 100 %, resolution 0.1%memory capacity 800K sample, Li polymer rechargeable battery, 6 in-built sensor, 4 ext. sensor port (60+ sensor available), connectivity port micro USB, 90.2 x 90.2 x 20mm(LxWxH), 120gm Diode laser : Wavelength 635nm, Operating voltage 5V DC, Optical power 0.4-0.8mW, Class II, Optical bench : Al exclusion, L = 1 mtr., Triangular shape with end stop, 4 point levelling (SS screw) Polarizer : Angle (0 + 90°), LC 1°, Aperture 21mm, Frame 130mm, Rod 10 mm Half wave plate : Angle (0 + 90°), LC 1°, Aperture 21mm, Frame 130mm, Rod 10mm Fixed slider : Al Extrusion, Base width 50mm, H 115mm Scope of Delivery: 1 Optical bench Triangular 1 Transverse saddle 1 Diode laser with adapter 2 Polarizer / Analyzer 1 Half wave plate 1 Light sensor 1 Data logger 1 Light sensor holder 1 Fixed saddle 1 Software CD (MiLAB) 1 Sensor cable (mini USB)